31131712668959721

Names of 31131712668959721

• Cardinal: 31131712668959721 can be written as Thirty-one quadrillion, one hundred thirty-one trillion, seven hundred twelve billion, six hundred sixty-eight million, nine hundred fifty-nine thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 3.1131712668959721 × 10¹⁶

Factors of 31131712668959721

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 646330

Divisors of 31131712668959721

• Number of divisors d(n): 81
• Complete list of divisors:
  1 3 7 9 13 21 39 49 63 91 117 147 169 273 441 507 637 819 1183 1521 1911 3549 5733 8281 10647 24843 74529 646307 1938921 4524149 5816763 8401991 13572447 25205973 31669043 40717341 58813937 75617919 95007129 109225883 176441811 285021387 327677649 411697559 529325433 764581181 983032947 1235092677 2293743543 3705278031 5352068267 6881230629 16056204801 48168614403 417712738249 1253138214747 2923989167743 3759414644241 5430265597237 8771967503229 16290796791711 20467924174201 26315902509687 38011859180659 48872390375133 61403772522603 70593452764081 114035577541977 184211317567809 211780358292243 266083014264613 342106732625931 494154169348567 635341074876729 798249042793839 1482462508045701 2394747128381517 3459079185439969 4447387524137103 10377237556319907 31131712668959721
• Sum of all divisors σ(n): 56643188086082871
• Sum of proper divisors (its aliquot sum) s(n): 25511475417123150
• 31131712668959721 is a deficient number, because the sum of its proper divisors (25511475417123150) is less than itself. Its deficiency is 5620237251836571

Bases of 31131712668959721

• Binary: 1101110100110100010000010110010111000100000001111101001₂
• Hexadecimal: 0x6E9A20B2E203E9
• Base-36: 8IJ9RD23I09

Squares and roots of 31131712668959721

• 31131712668959721 squared (31131712668959721²) is 969183533702667195051812320397841
• 31131712668959721 cubed (31131712668959721³) is 30172343294718475051731189994390261831494324362361
• 31131712668959721 is a perfect square number. Its square root is 176441811
• The cube root of 31131712668959721 is 314582.3394497347

Scales and comparisons

• 31,131,712,668,959,721 seconds is equal to 989,892,166 years, 8 weeks, 3 days, 7 hours, 55 minutes, 21 seconds.
• To count from 1 to 31,131,712,668,959,721 would take you about two billion, nine hundred sixty-nine million, six hundred seventy-six thousand, four hundred ninety-eight 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 31131712668959721 cubic inches would be around 26215.2 feet tall.

Recreational maths with 31131712668959721

• 31131712668959721 backwards is 12795986621713113
• The number of decimal digits it has is: 17
• The sum of 31131712668959721's digits is 72
• More coming soon!