31213845900

Names of 31213845900

• Cardinal: 31213845900 can be written as Thirty-one billion, two hundred thirteen million, eight hundred forty-five thousand, nine hundred.

Scientific notation

• Scientific notation: 3.12138459 × 10¹⁰

Factors of 31213845900

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 34682061

Divisors of 31213845900

• Number of divisors d(n): 54
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 25 30 36 45 50 60 75 90 100 150 180 225 300 450 900 34682051 69364102 104046153 138728204 173410255 208092306 312138459 346820510 416184612 520230765 624276918 693641020 867051275 1040461530 1248553836 1560692295 1734102550 2080923060 2601153825 3121384590 3468205100 5202307650 6242769180 7803461475 10404615300 15606922950 31213845900
• Sum of all divisors σ(n): 97838068692
• Sum of proper divisors (its aliquot sum) s(n): 66624222792
• 31213845900 is an abundant number, because the sum of its proper divisors (66624222792) is greater than itself. Its abundance is 35410376892

Bases of 31213845900

• Binary: 11101000100011111010111110110001100₂
• Hexadecimal: 0x7447D7D8C
• Base-36: EC7X1N0

Squares and roots of 31213845900

• 31213845900 squared (31213845900²) is 974304175868946810000
• 31213845900 cubed (31213845900³) is 30411780405299804322636579000000
• The square root of 31213845900 is 176674.4064656791
• The cube root of 31213845900 is 3148.5874543503

Scales and comparisons

• 31,213,845,900 seconds is equal to 992 years, 26 weeks, 1 day, 8 hours, 45 minutes.
• To count from 1 to 31,213,845,900 would take you about one thousand, nine hundred eighty-five 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 31213845900 cubic inches would be around 262.4 feet tall.

Recreational maths with 31213845900

• 31213845900 backwards is 00954831213
• 31213845900 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 31213845900's digits is 36
• More coming soon!