31491861521121

Names of 31491861521121

• Cardinal: 31491861521121 can be written as Thirty-one trillion, four hundred ninety-one billion, eight hundred sixty-one million, five hundred twenty-one thousand, one hundred twenty-one.

Scientific notation

• Scientific notation: 3.1491861521121 × 10¹³

Factors of 31491861521121

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 2421

Divisors of 31491861521121

• Number of divisors d(n): 81
• Complete list of divisors:
  1 3 9 27 29 81 87 243 261 729 783 841 2187 2349 2389 2523 6561 7047 7167 7569 21141 21501 22707 63423 64503 68121 69281 190269 193509 204363 207843 580527 613089 623529 1741581 1839267 1870587 2009149 5224743 5517801 5611761 5707321 6027447 15674229 16835283 17121963 18082341 50505849 51365889 54247023 151517547 154097667 162741069 165512309 454552641 462293001 488223207 496536927 1386879003 1464669621 1489610781 4160637009 4394008863 4468832343 4799856961 12481911027 13182026589 13406497029 14399570883 37445733081 40219491087 43198712649 120658473261 129596137947 361975419783 388788413841 1085926259349 1166365241523 3499095724569 10497287173707 31491861521121
• Sum of all divisors σ(n): 48940850643321
• Sum of proper divisors (its aliquot sum) s(n): 17448989122200
• 31491861521121 is a deficient number, because the sum of its proper divisors (17448989122200) is less than itself. Its deficiency is 14042872398921

Bases of 31491861521121

• Binary: 111001010010001000101001110000010001011100001₂
• Hexadecimal: 0x1CA4453822E1
• Base-36: B5V5T9529

Squares and roots of 31491861521121

• 31491861521121 squared (31491861521121²) is 991737342065461463929096641
• 31491861521121 cubed (31491861521121³) is 31231655041650120757406968818133671654561
• 31491861521121 is a perfect square number. Its square root is 5611761
• The cube root of 31491861521121 is 31579.0778831531

Scales and comparisons

• 31,491,861,521,121 seconds is equal to 1,001,343 years, 40 weeks, 5 days, 23 hours, 25 minutes, 21 seconds.
• To count from 1 to 31,491,861,521,121 would take you about two million, five hundred three thousand, three hundred fifty-nine 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 31491861521121 cubic inches would be around 2631.6 feet tall.

Recreational maths with 31491861521121

• 31491861521121 backwards is 12112516819413
• The number of decimal digits it has is: 14
• The sum of 31491861521121's digits is 45
• More coming soon!