231391332018

Names of 231391332018

• Cardinal: 231391332018 can be written as Two hundred thirty-one billion, three hundred ninety-one million, three hundred thirty-two thousand and eighteen.

Scientific notation

• Scientific notation: 2.31391332018 × 10¹¹

Factors of 231391332018

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 722746

Divisors of 231391332018

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 6 7 9 11 14 18 21 22 27 33 42 49 54 63 66 77 98 99 121 126 147 154 189 198 231 242 294 297 363 378 441 462 539 594 693 726 847 882 1078 1089 1323 1386 1617 1694 2079 2178 2541 2646 3234 3267 4158 4851 5082 5929 6534 7623 9702 11858 14553 15246 17787 22869 29106 35574 45738 53361 106722 160083 320166 722723 1445446 2168169 4336338 5059061 6504507 7949953 10118122 13009014 15177183 15899906 19513521 23849859 30354366 35413427 39027042 45531549 47699718 55649671 70826854 71549577 87449483 91063098 106240281 111299342 136594647 143099154 166949013 174898966 212480562 214648731 262348449 273189294 318720843 333898026 389547697 429297462 500847039 524696898 612146381 637441686 779095394 787045347 956162529 1001694078 1168643091 1224292762 1502541117 1574090694 1836439143 1912325058 2337286182 2361136041 3005082234 3505929273 3672878286 4285024667 4722272082 5509317429 7011858546 8570049334 10517787819 11018634858 12855074001 16527952287 21035575638 25710148002 33055904574 38565222003 77130444006 115695666009 231391332018
• Sum of all divisors σ(n): 657476477280
• Sum of proper divisors (its aliquot sum) s(n): 426085145262
• 231391332018 is an abundant number, because the sum of its proper divisors (426085145262) is greater than itself. Its abundance is 194693813244

Bases of 231391332018

• Binary: 11010111011111111111111000011010110010₂
• Hexadecimal: 0x35DFFF86B2
• Base-36: 2YASFAGI

Squares and roots of 231391332018

• 231391332018 squared (231391332018²) is 53541948533064311952324
• 231391332018 cubed (231391332018³) is 12389142789904952257906928470709832
• The square root of 231391332018 is 481031.5291308877
• The cube root of 231391332018 is 6139.2553219281

Scales and comparisons

• 231,391,332,018 seconds is equal to 7,357 years, 27 weeks, 3 days, 10 hours, 18 seconds.
• To count from 1 to 231,391,332,018 would take you about fourteen thousand, seven hundred fifteen 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 231391332018 cubic inches would be around 511.6 feet tall.

Recreational maths with 231391332018

• 231391332018 backwards is 810233193132
• The number of decimal digits it has is: 12
• The sum of 231391332018's digits is 36
• More coming soon!