31297421880

Names of 31297421880

• Cardinal: 31297421880 can be written as Thirty-one billion, two hundred ninety-seven million, four hundred twenty-one thousand, eight hundred eighty.

Scientific notation

• Scientific notation: 3.129742188 × 10¹⁰

Factors of 31297421880

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 86937293

Divisors of 31297421880

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 180 360 86937283 173874566 260811849 347749132 434686415 521623698 695498264 782435547 869372830 1043247396 1304059245 1564871094 1738745660 2086494792 2608118490 3129742188 3477491320 3912177735 5216236980 6259484376 7824355470 10432473960 15648710940 31297421880
• Sum of all divisors σ(n): 101716622280
• Sum of proper divisors (its aliquot sum) s(n): 70419200400
• 31297421880 is an abundant number, because the sum of its proper divisors (70419200400) is greater than itself. Its abundance is 39121778520

Bases of 31297421880

• Binary: 11101001001011110001100001000111000₂
• Hexadecimal: 0x74978C238
• Base-36: EDLODA0

Squares and roots of 31297421880

• 31297421880 squared (31297421880²) is 979528616334702734400
• 31297421880 cubed (31297421880³) is 30656720348959850762906388672000
• The square root of 31297421880 is 176910.7737815875
• The cube root of 31297421880 is 3151.3950948131

Scales and comparisons

• 31,297,421,880 seconds is equal to 995 years, 8 weeks, 2 days, 16 hours, 18 minutes.
• To count from 1 to 31,297,421,880 would take you about one thousand, nine hundred ninety 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 31297421880 cubic inches would be around 262.6 feet tall.

Recreational maths with 31297421880

• 31297421880 backwards is 08812479213
• 31297421880 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 31297421880's digits is 45
• More coming soon!