31399143680

Names of 31399143680

• Cardinal: 31399143680 can be written as Thirty-one billion, three hundred ninety-nine million, one hundred forty-three thousand, six hundred eighty.

Scientific notation

• Scientific notation: 3.139914368 × 10¹⁰

Factors of 31399143680

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 7842

Divisors of 31399143680

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 8 10 16 20 23 32 40 46 64 80 92 115 128 139 160 184 230 256 278 320 368 460 556 640 695 736 920 1112 1280 1390 1472 1840 2224 2780 2944 3197 3680 4448 5560 5888 6394 7360 7673 8896 11120 12788 14720 15346 15985 17792 22240 25576 29440 30692 31970 35584 38365 44480 51152 61384 63940 76730 88960 102304 122768 127880 153460 176479 177920 204608 245536 255760 306920 352958 409216 491072 511520 613840 705916 818432 882395 982144 1023040 1066547 1227680 1411832 1764790 1964288 2046080 2133094 2455360 2823664 3529580 4092160 4266188 4910720 5332735 5647328 7059160 8532376 9821440 10665470 11294656 14118320 17064752 21330940 22589312 24530581 28236640 34129504 42661880 45178624 49061162 56473280 68259008 85323760 98122324 112946560 122652905 136518016 170647520 196244648 225893120 245305810 273036032 341295040 392489296 490611620 682590080 784978592 981223240 1365180160 1569957184 1962446480 3139914368 3924892960 6279828736 7849785920 15699571840 31399143680
• Sum of all divisors σ(n): 79055706240
• Sum of proper divisors (its aliquot sum) s(n): 47656562560
• 31399143680 is an abundant number, because the sum of its proper divisors (47656562560) is greater than itself. Its abundance is 16257418880

Bases of 31399143680

• Binary: 11101001111100010001110100100000000₂
• Hexadecimal: 0x74F88E900
• Base-36: EFA8MBK

Squares and roots of 31399143680

• 31399143680 squared (31399143680²) is 985906223837283942400
• 31399143680 cubed (31399143680³) is 30956611177273119448374444032000
• The square root of 31399143680 is 177198.0352035543
• The cube root of 31399143680 is 3154.8055877653

Scales and comparisons

• 31,399,143,680 seconds is equal to 998 years, 20 weeks, 4 days, 21 minutes, 20 seconds.
• To count from 1 to 31,399,143,680 would take you about one thousand, nine hundred ninety-six 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 31399143680 cubic inches would be around 262.9 feet tall.

Recreational maths with 31399143680

• 31399143680 backwards is 08634199313
• The number of decimal digits it has is: 11
• The sum of 31399143680's digits is 47
• More coming soon!