31957100721

Names of 31957100721

• Cardinal: 31957100721 can be written as Thirty-one billion, nine hundred fifty-seven million, one hundred thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 3.1957100721 × 10¹⁰

Factors of 31957100721

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 45383

Divisors of 31957100721

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 7 9 13 21 27 39 41 49 63 91 117 123 147 189 273 287 351 369 441 533 637 819 861 1107 1323 1599 1911 2009 2457 2583 3731 4797 5733 6027 7749 11193 14391 17199 18081 26117 33579 45319 54243 78351 100737 135957 235053 317233 407871 589147 705159 951699 1223613 1767441 1858079 2220631 2855097 4124029 5302323 5574237 6661893 8565291 12372087 13006553 15906969 16722711 19985679 24155027 28868203 37116261 39019659 50168133 59957037 72465081 86604609 91045871 111348783 117058977 169085189 217395243 259813827 273137613 351176931 507255567 652185729 779441481 819412839 1183596323 1521766701 2458238517 3550788969 4565300103 10652366907 31957100721
• Sum of all divisors σ(n): 60757804800
• Sum of proper divisors (its aliquot sum) s(n): 28800704079
• 31957100721 is a deficient number, because the sum of its proper divisors (28800704079) is less than itself. Its deficiency is 3156396642

Bases of 31957100721

• Binary: 11101110000110010101010100010110001₂
• Hexadecimal: 0x770CAA8B1
• Base-36: EOIFKQ9

Squares and roots of 31957100721

• 31957100721 squared (31957100721²) is 1021256286492138719841
• 31957100721 cubed (31957100721³) is 32636390009383708844662838105361
• The square root of 31957100721 is 178765.4908560375
• The cube root of 31957100721 is 3173.3827536397

Scales and comparisons

• 31,957,100,721 seconds is equal to 1,016 years, 7 weeks, 20 hours, 25 minutes, 21 seconds.
• To count from 1 to 31,957,100,721 would take you about two thousand and thirty-two 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 31957100721 cubic inches would be around 264.4 feet tall.

Recreational maths with 31957100721

• 31957100721 backwards is 12700175913
• The number of decimal digits it has is: 11
• The sum of 31957100721's digits is 36
• More coming soon!