31391907991020

Names of 31391907991020

• Cardinal: 31391907991020 can be written as Thirty-one trillion, three hundred ninety-one billion, nine hundred seven million, nine hundred ninety-one thousand and twenty.

Scientific notation

• Scientific notation: 3.139190799102 × 10¹³

Factors of 31391907991020

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 913086530

Divisors of 31391907991020

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 191 382 573 764 955 1146 1719 1910 2292 2865 3438 3820 5730 6876 8595 11460 17190 34380 913086329 1826172658 2739258987 3652345316 4565431645 5478517974 8217776961 9130863290 10957035948 13696294935 16435553922 18261726580 27392589870 32871107844 41088884805 54785179740 82177769610 164355539220 174399488839 348798977678 523198466517 697597955356 871997444195 1046396933034 1569595399551 1743994888390 2092793866068 2615992332585 3139190799102 3487989776780 5231984665170 6278381598204 7847976997755 10463969330340 15695953995510 31391907991020
• Sum of all divisors σ(n): 95720666146560
• Sum of proper divisors (its aliquot sum) s(n): 64328758155540
• 31391907991020 is an abundant number, because the sum of its proper divisors (64328758155540) is greater than itself. Its abundance is 32936850164520

Bases of 31391907991020

• Binary: 111001000110011111111100001100100110111101100₂
• Hexadecimal: 0x1C8CFF864DEC
• Base-36: B4L8RI3N0

Squares and roots of 31391907991020

• 31391907991020 squared (31391907991020²) is 985451887316665332400640400
• 31391907991020 cubed (31391907991020³) is 30935214976221767033406667892925449208000
• The square root of 31391907991020 is 5602848.2034604507
• The cube root of 31391907991020 is 31545.6323566031

Scales and comparisons

• 31,391,907,991,020 seconds is equal to 998,165 years, 29 weeks, 5 days, 9 hours, 57 minutes.
• To count from 1 to 31,391,907,991,020 would take you about two million, four hundred ninety-five thousand, four hundred thirteen 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 31391907991020 cubic inches would be around 2628.8 feet tall.

Recreational maths with 31391907991020

• 31391907991020 backwards is 02019970919313
• The number of decimal digits it has is: 14
• The sum of 31391907991020's digits is 54
• More coming soon!