31509136890

Names of 31509136890

• Cardinal: 31509136890 can be written as Thirty-one billion, five hundred nine million, one hundred thirty-six thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 3.150913689 × 10¹⁰

Factors of 31509136890

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 28

Divisors of 31509136890

• Number of divisors d(n): 468
• Complete list of divisors:
  1 2 3 5 6 7 9 10 11 14 15 18 21 22 27 30 33 35 42 45 49 54 55 63 66 70 77 81 90 98 99 105 110 121 126 135 147 154 162 165 189 198 210 231 242 243 245 270 294 297 315 330 363 378 385 405 441 462 486 490 495 539 567 594 605 630 693 726 729 735 770 810 847 882 891 945 990 1078 1089 1134 1155 1210 1215 1323 1386 1458 1470 1485 1617 1694 1701 1782 1815 1890 2079 2178 2187 2205 2310 2430 2541 2646 2673 2695 2835 2970 3234 3267 3402 3465 3630 3645 3969 4158 4235 4374 4410 4455 4851 5082 5103 5346 5390 5445 5670 5929 6237 6534 6561 6615 6930 7290 7623 7938 8019 8085 8470 8505 8910 9702 9801 10206 10395 10890 10935 11858 11907 12474 12705 13122 13230 13365 14553 15246 15309 16038 16170 16335 17010 17787 18711 19602 19683 19845 20790 21870 22869 23814 24057 24255 25410 25515 26730 29106 29403 29645 30618 31185 32670 32805 35574 35721 37422 38115 39366 39690 40095 43659 45738 45927 48114 48510 49005 51030 53361 56133 58806 59049 59290 59535 62370 65610 68607 71442 72171 72765 76230 76545 80190 87318 88209 88935 91854 93555 98010 98415 106722 107163 112266 114345 118098 119070 120285 130977 137214 137781 144342 145530 147015 153090 160083 168399 176418 177147 177870 178605 187110 196830 205821 214326 216513 218295 228690 229635 240570 261954 264627 266805 275562 280665 294030 295245 320166 321489 336798 343035 354294 357210 360855 392931 411642 413343 433026 436590 441045 459270 480249 505197 529254 531441 533610 535815 561330 590490 617463 642978 649539 654885 686070 688905 721710 785862 793881 800415 826686 841995 882090 885735 960498 964467 1010394 1029105 1062882 1071630 1082565 1178793 1234926 1240029 1299078 1309770 1323135 1377810 1440747 1515591 1587762 1600830 1607445 1683990 1771470 1852389 1928934 1948617 1964655 2058210 2066715 2165130 2357586 2381643 2401245 2480058 2525985 2646270 2657205 2881494 2893401 3031182 3087315 3214890 3247695 3536379 3704778 3720087 3897234 3929310 3969405 4133430 4322241 4546773 4763286 4802490 4822335 5051970 5314410 5557167 5786802 5845851 5893965 6174630 6200145 6495390 7072758 7144929 7203735 7440174 7577955 7938810 8644482 8680203 9093546 9261945 9644670 9743085 10609137 11114334 11691702 11787930 11908215 12400290 12966723 13640319 14289858 14407470 14467005 15155910 16671501 17360406 17681895 18523890 18600435 19486170 21218274 21434787 21611205 22733865 23816430 25933446 26040609 27280638 27785835 28934010 29229255 31827411 33343002 35363790 35724645 37200870 38900169 40920957 42869574 43222410 43401015 45467730 50014503 52081218 53045685 55571670 58458510 63654822 64304361 64833615 68201595 71449290 77800338 81841914 83357505 86802030 95482233 100029006 106091370 107173935 116700507 128608722 129667230 130203045 136403190 150043509 159137055 166715010 190964466 194500845 204604785 214347870 233401014 250072515 260406090 286446699 300087018 318274110 321521805 350101521 389001690 409209570 450130527 477411165 500145030 572893398 583502535 643043610 700203042 750217545 900261054 954822330 1050304563 1167005070 1432233495 1500435090 1750507605 2100609126 2250652635 2864466990 3150913689 3501015210 4501305270 5251522815 6301827378 10503045630 15754568445 31509136890
• Sum of all divisors σ(n): 108778995738
• Sum of proper divisors (its aliquot sum) s(n): 77269858848
• 31509136890 is an abundant number, because the sum of its proper divisors (77269858848) is greater than itself. Its abundance is 45760721958

Bases of 31509136890

• Binary: 11101010110000101110100010111111010₂
• Hexadecimal: 0x7561745FA
• Base-36: EH3Q5MI

Squares and roots of 31509136890

• 31509136890 squared (31509136890²) is 992825707552758872100
• 31509136890 cubed (31509136890³) is 31283081127190986198160901769000
• The square root of 31509136890 is 177508.1318982317
• The cube root of 31509136890 is 3158.4851231867

Scales and comparisons

• 31,509,136,890 seconds is equal to 1,001 years, 46 weeks, 3 days, 2 hours, 1 minute, 30 seconds.
• To count from 1 to 31,509,136,890 would take you about two thousand and three years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 31509136890 cubic inches would be around 263.2 feet tall.

Recreational maths with 31509136890

• 31509136890 backwards is 09863190513
• 31509136890 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 31509136890's digits is 45
• More coming soon!