31381879872

Names of 31381879872

• Cardinal: 31381879872 can be written as Thirty-one billion, three hundred eighty-one million, eight hundred seventy-nine thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 3.1381879872 × 10¹⁰

Factors of 31381879872

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 450

Divisors of 31381879872

• Number of divisors d(n): 252
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 19 21 24 28 32 38 42 48 49 56 57 64 76 84 96 98 112 114 133 147 152 168 192 196 224 228 266 294 304 336 392 399 419 448 456 532 588 608 672 784 798 838 912 931 1064 1176 1216 1257 1344 1568 1596 1676 1824 1862 2128 2352 2514 2793 2933 3136 3192 3352 3648 3724 4256 4704 5028 5586 5866 6384 6704 7448 7961 8512 8799 9408 10056 11172 11732 12768 13408 14896 15922 17598 20112 20531 22344 23464 23883 25536 26816 29792 31844 35196 40224 41062 44688 46928 47766 55727 59584 61593 63688 70392 80448 82124 89376 93856 95532 111454 123186 127376 140784 164248 167181 175561 178752 187712 191064 222908 246372 254752 281568 328496 334362 351122 382128 390089 445816 492744 509504 526683 563136 656992 668724 702244 764256 780178 891632 985488 1053366 1170267 1228927 1313984 1337448 1404488 1528512 1560356 1783264 1970976 2106732 2340534 2457854 2674896 2808976 3120712 3335659 3566528 3686781 3941952 4213464 4681068 4915708 5349792 5617952 6241424 6671318 7373562 8426928 8602489 9362136 9831416 10006977 10699584 11235904 12482848 13342636 14747124 16853856 17204978 18724272 19662832 20013954 23349613 24965696 25807467 26685272 29494248 33707712 34409956 37448544 39325664 40027908 46699226 51614934 53370544 58988496 68819912 70048839 74897088 78651328 80055816 93398452 103229868 106741088 117976992 137639824 140097678 160111632 163447291 186796904 206459736 213482176 235953984 275279648 280195356 320223264 326894582 373593808 412919472 490341873 550559296 560390712 640446528 653789164 747187616 825838944 980683746 1120781424 1307578328 1494375232 1651677888 1961367492 2241562848 2615156656 3922734984 4483125696 5230313312 7845469968 10460626624 15690939936 31381879872
• Sum of all divisors σ(n): 101914116720
• Sum of proper divisors (its aliquot sum) s(n): 70532236848
• 31381879872 is an abundant number, because the sum of its proper divisors (70532236848) is greater than itself. Its abundance is 39150356976

Bases of 31381879872

• Binary: 11101001110100000010111110001000000₂
• Hexadecimal: 0x74E817C40
• Base-36: EEZYLHC

Squares and roots of 31381879872

• 31381879872 squared (31381879872²) is 984822384300638736384
• 31381879872 cubed (31381879872³) is 30905577759379263558072563662848
• The square root of 31381879872 is 177149.3151891929
• The cube root of 31381879872 is 3154.2272923475

Scales and comparisons

• 31,381,879,872 seconds is equal to 997 years, 44 weeks, 4 hours, 51 minutes, 12 seconds.
• To count from 1 to 31,381,879,872 would take you about one thousand, nine hundred ninety-five 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 31381879872 cubic inches would be around 262.9 feet tall.

Recreational maths with 31381879872

• 31381879872 backwards is 27897818313
• 31381879872 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 31381879872's digits is 57
• More coming soon!