31915135780420

Names of 31915135780420

• Cardinal: 31915135780420 can be written as Thirty-one trillion, nine hundred fifteen billion, one hundred thirty-five million, seven hundred eighty thousand, four hundred twenty.

Scientific notation

• Scientific notation: 3.191513578042 × 10¹³

Factors of 31915135780420

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 534

Divisors of 31915135780420

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 10 17 20 34 61 68 85 122 170 244 289 305 340 449 578 610 898 1037 1156 1220 1445 1796 2074 2245 2890 4148 4490 5185 5780 7633 8980 10370 15266 17629 20740 27389 30532 35258 38165 54778 70516 76330 88145 109556 129761 136945 152660 176290 201601 259522 273890 352580 403202 465613 519044 547780 648805 806404 931226 1008005 1297610 1862452 2016010 2328065 2595220 3427217 4032020 4656130 6854434 7915421 9312260 12297661 13708868 15830842 17136085 24595322 31661684 34272170 39577105 49190644 58262689 61488305 68544340 79154210 90518849 116525378 122976610 158308420 181037698 209060237 233050756 245953220 291313445 362075396 418120474 452594245 582626890 836240948 905188490 1045301185 1165253780 1538820433 1810376980 2090602370 3077640866 3554024029 4181204740 5521649789 6155281732 7108048058 7694102165 11043299578 14216096116 15388204330 17770120145 22086599156 26159947361 27608248945 30776408660 35540240290 52319894722 55216497890 71080480580 93868046413 104639789444 110432995780 130799736805 187736092826 261599473610 375472185652 469340232065 523198947220 938680464130 1595756789021 1877360928260 3191513578042 6383027156084 7978783945105 15957567890210 31915135780420
• Sum of all divisors σ(n): 72524827645200
• Sum of proper divisors (its aliquot sum) s(n): 40609691864780
• 31915135780420 is an abundant number, because the sum of its proper divisors (40609691864780) is greater than itself. Its abundance is 8694556084360

Bases of 31915135780420

• Binary: 111010000011011010010010101001100011001000100₂
• Hexadecimal: 0x1D06D254C644
• Base-36: BB9LZTHS4

Squares and roots of 31915135780420

• 31915135780420 squared (31915135780420²) is 1018575891882644922455376400
• 31915135780420 cubed (31915135780420³) is 32507987892097014400281619664438850088000
• The square root of 31915135780420 is 5649348.2615625673
• The cube root of 31915135780420 is 31719.9308697203

Scales and comparisons

• 31,915,135,780,420 seconds is equal to 1,014,802 years, 31 weeks, 14 hours, 33 minutes, 40 seconds.
• To count from 1 to 31,915,135,780,420 would take you about two million, five hundred thirty-seven thousand and 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 31915135780420 cubic inches would be around 2643.3 feet tall.

Recreational maths with 31915135780420

• 31915135780420 backwards is 02408753151913
• The number of decimal digits it has is: 14
• The sum of 31915135780420's digits is 49
• More coming soon!