31991807999

Names of 31991807999

• Cardinal: 31991807999 can be written as Thirty-one billion, nine hundred ninety-one million, eight hundred seven thousand, nine hundred ninety-nine.

Scientific notation

• Scientific notation: 3.1991807999 × 10¹⁰

Factors of 31991807999

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 5168664

Divisors of 31991807999

• Number of divisors d(n): 4
• Complete list of divisors:
  1 6197 5162467 31991807999
• Sum of all divisors σ(n): 31996976664
• Sum of proper divisors (its aliquot sum) s(n): 5168665
• 31991807999 is a deficient number, because the sum of its proper divisors (5168665) is less than itself. Its deficiency is 31986639334

Bases of 31991807999

• Binary: 11101110010110111000011111111111111₂
• Hexadecimal: 0x772DC3FFF
• Base-36: EP33H1B

Squares and roots of 31991807999

• 31991807999 squared (31991807999²) is 1023475779044880384001
• 31991807999 cubed (31991807999³) is 32742840614830760848881383423999
• The square root of 31991807999 is 178862.5393954809
• The cube root of 31991807999 is 3174.5311643357

Scales and comparisons

• 31,991,807,999 seconds is equal to 1,017 years, 12 weeks, 3 days, 13 hours, 19 minutes, 59 seconds.
• To count from 1 to 31,991,807,999 would take you about two thousand and thirty-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 31991807999 cubic inches would be around 264.5 feet tall.

Recreational maths with 31991807999

• 31991807999 backwards is 99970819913
• The number of decimal digits it has is: 11
• The sum of 31991807999's digits is 65
• More coming soon!