31205400138

Names of 31205400138

• Cardinal: 31205400138 can be written as Thirty-one billion, two hundred five million, four hundred thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 3.1205400138 × 10¹⁰

Factors of 31205400138

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 8549

Divisors of 31205400138

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 9 11 18 22 33 66 71 99 142 198 213 271 426 542 639 781 813 1278 1562 1626 2343 2439 2981 4686 4878 5962 7029 8191 8943 14058 16382 17886 19241 24573 26829 38482 49146 53658 57723 73719 90101 115446 147438 173169 180202 211651 270303 346338 423302 540606 581561 634953 810909 1163122 1269906 1621818 1744683 1904859 2219761 3489366 3809718 4439522 5234049 6397171 6659283 10468098 12794342 13318566 19191513 19977849 24417371 38383026 39955698 48834742 57574539 73252113 115149078 146504226 157603031 219756339 315206062 439512678 472809093 945618186 1418427279 1733633341 2836854558 3467266682 5200900023 10401800046 15602700069 31205400138
• Sum of all divisors σ(n): 75082235904
• Sum of proper divisors (its aliquot sum) s(n): 43876835766
• 31205400138 is an abundant number, because the sum of its proper divisors (43876835766) is greater than itself. Its abundance is 12671435628

Bases of 31205400138

• Binary: 11101000011111111001001111001001010₂
• Hexadecimal: 0x743FC9E4A
• Base-36: EC2W0UI

Squares and roots of 31205400138

• 31205400138 squared (31205400138²) is 973776997772690419044
• 31205400138 cubed (31205400138³) is 30387100860677139295066915428072
• The square root of 31205400138 is 176650.5027957747
• The cube root of 31205400138 is 3148.3034498401

Scales and comparisons

• 31,205,400,138 seconds is equal to 992 years, 12 weeks, 1 day, 14 hours, 42 minutes, 18 seconds.
• To count from 1 to 31,205,400,138 would take you about one thousand, nine hundred eighty-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 31205400138 cubic inches would be around 262.4 feet tall.

Recreational maths with 31205400138

• 31205400138 backwards is 83100450213
• The number of decimal digits it has is: 11
• The sum of 31205400138's digits is 27
• More coming soon!