31681881438

Names of 31681881438

• Cardinal: 31681881438 can be written as Thirty-one billion, six hundred eighty-one million, eight hundred eighty-one thousand, four hundred thirty-eight.

Scientific notation

• Scientific notation: 3.1681881438 × 10¹⁰

Factors of 31681881438

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 451576

Divisors of 31681881438

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 3 6 23 46 69 138 509 1018 1527 3054 11707 23414 35121 70242 451039 902078 1353117 2706234 10373897 20747794 31121691 62243382 229578851 459157702 688736553 1377473106 5280313573 10560627146 15840940719 31681881438
• Sum of all divisors σ(n): 66248755200
• Sum of proper divisors (its aliquot sum) s(n): 34566873762
• 31681881438 is an abundant number, because the sum of its proper divisors (34566873762) is greater than itself. Its abundance is 2884992324

Bases of 31681881438

• Binary: 11101100000011000110010010101011110₂
• Hexadecimal: 0x76063255E
• Base-36: EJYKO66

Squares and roots of 31681881438

• 31681881438 squared (31681881438²) is 1003741611451488947844
• 31681881438 cubed (31681881438³) is 31800422728393135934160973719672
• The square root of 31681881438 is 177994.0488836637
• The cube root of 31681881438 is 3164.2465952027

Scales and comparisons

• 31,681,881,438 seconds is equal to 1,007 years, 20 weeks, 10 hours, 37 minutes, 18 seconds.
• To count from 1 to 31,681,881,438 would take you about two thousand and fourteen 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 31681881438 cubic inches would be around 263.7 feet tall.

Recreational maths with 31681881438

• 31681881438 backwards is 83418818613
• The number of decimal digits it has is: 11
• The sum of 31681881438's digits is 51
• More coming soon!