31357905985

Names of 31357905985

• Cardinal: 31357905985 can be written as Thirty-one billion, three hundred fifty-seven million, nine hundred five thousand, nine hundred eighty-five.

Scientific notation

• Scientific notation: 3.1357905985 × 10¹⁰

Factors of 31357905985

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2207

Divisors of 31357905985

• Number of divisors d(n): 72
• Complete list of divisors:
  1 5 7 17 35 49 85 119 227 245 289 595 833 1135 1445 1589 1951 2023 3859 4165 7945 9755 10115 11123 13657 14161 19295 27013 33167 55615 65603 68285 70805 95599 135065 165835 189091 232169 328015 442877 459221 477995 563839 945455 1160845 1625183 2214385 2296105 2819195 3100139 3214547 3946873 7528909 8125915 15500695 16072735 19734365 21700973 27628111 37644545 52702363 108504865 127991453 138140555 263511815 368916541 639957265 895940171 1844582705 4479700855 6271581197 31357905985
• Sum of all divisors σ(n): 46728209664
• Sum of proper divisors (its aliquot sum) s(n): 15370303679
• 31357905985 is a deficient number, because the sum of its proper divisors (15370303679) is less than itself. Its deficiency is 15987602306

Bases of 31357905985

• Binary: 11101001101000100111010110001000001₂
• Hexadecimal: 0x74D13AC41
• Base-36: EELOR41

Squares and roots of 31357905985

• 31357905985 squared (31357905985²) is 983318267764098820225
• 31357905985 cubed (31357905985³) is 30834801793879666962864966546625
• The square root of 31357905985 is 177081.6364985371
• The cube root of 31357905985 is 3153.4238738001

Scales and comparisons

• 31,357,905,985 seconds is equal to 997 years, 4 weeks, 2 days, 17 hours, 26 minutes, 25 seconds.
• To count from 1 to 31,357,905,985 would take you about one thousand, nine hundred ninety-four 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 31357905985 cubic inches would be around 262.8 feet tall.

Recreational maths with 31357905985

• 31357905985 backwards is 58950975313
• The number of decimal digits it has is: 11
• The sum of 31357905985's digits is 55
• More coming soon!