31387706631

Names of 31387706631

• Cardinal: 31387706631 can be written as Thirty-one billion, three hundred eighty-seven million, seven hundred six thousand, six hundred thirty-one.

Scientific notation

• Scientific notation: 3.1387706631 × 10¹⁰

Factors of 31387706631

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 634

Divisors of 31387706631

• Number of divisors d(n): 84
• Complete list of divisors:
  1 3 9 23 27 69 81 199 207 243 409 529 597 621 729 1227 1587 1791 1863 3681 4577 4761 5373 5589 9407 11043 13731 14283 16119 16767 28221 33129 41193 42849 48357 81391 84663 99387 105271 123579 128547 145071 216361 244173 253989 298161 315813 370737 385641 649083 732519 761967 947439 1112211 1871993 1947249 2197557 2285901 2842317 3336633 5615979 5841747 6592671 6857703 8526951 16847937 17525241 19778013 25580853 43055839 50543811 52575723 59334039 76742559 129167517 151631433 157727169 387502551 454894299 1162507653 1364682897 3487522959 10462568877 31387706631
• Sum of all divisors σ(n): 49563178000
• Sum of proper divisors (its aliquot sum) s(n): 18175471369
• 31387706631 is a deficient number, because the sum of its proper divisors (18175471369) is less than itself. Its deficiency is 13212235262

Bases of 31387706631

• Binary: 11101001110110110100110010100000111₂
• Hexadecimal: 0x74EDA6507
• Base-36: EF3FHFR

Squares and roots of 31387706631

• 31387706631 squared (31387706631²) is 985188127553721370161
• 31387706631 cubed (31387706631³) is 30922795924000414058928825237591
• The square root of 31387706631 is 177165.7603234891
• The cube root of 31387706631 is 3154.4224982537

Scales and comparisons

• 31,387,706,631 seconds is equal to 998 years, 1 week, 4 days, 15 hours, 23 minutes, 51 seconds.
• To count from 1 to 31,387,706,631 would take you about one thousand, nine hundred ninety-six 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 31387706631 cubic inches would be around 262.9 feet tall.

Recreational maths with 31387706631

• 31387706631 backwards is 13660778313
• The number of decimal digits it has is: 11
• The sum of 31387706631's digits is 45
• More coming soon!