31217842390

Names of 31217842390

• Cardinal: 31217842390 can be written as Thirty-one billion, two hundred seventeen million, eight hundred forty-two thousand, three hundred ninety.

Scientific notation

• Scientific notation: 3.121784239 × 10¹⁰

Factors of 31217842390

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 17402

Divisors of 31217842390

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 5 7 10 14 17 34 35 37 41 70 74 82 85 119 170 185 205 238 259 287 370 410 518 574 595 629 697 1190 1258 1295 1394 1435 1517 2590 2870 3034 3145 3485 4403 4879 6290 6970 7585 8806 9758 10619 15170 17293 21238 22015 24395 25789 34586 44030 48790 51578 53095 86465 106190 121051 128945 172930 180523 242102 257890 293981 361046 587962 605255 639841 709013 902615 1210510 1279682 1418026 1469905 1805230 2057867 2939810 3199205 3545065 4115734 4478887 4963091 6398410 7090130 8957774 9926182 10289335 10877297 12053221 20578670 21754594 22394435 24106442 24815455 26233481 44788870 49630910 52466962 54386485 60266105 76141079 84372547 108772970 120532210 131167405 152282158 168745094 183634367 262334810 367268734 380705395 421862735 445969177 761410790 843725470 891938354 918171835 1836343670 2229845885 3121784239 4459691770 6243568478 15608921195 31217842390
• Sum of all divisors σ(n): 71542372608
• Sum of proper divisors (its aliquot sum) s(n): 40324530218
• 31217842390 is an abundant number, because the sum of its proper divisors (40324530218) is greater than itself. Its abundance is 9106687828

Bases of 31217842390

• Binary: 11101000100101110100111100011010110₂
• Hexadecimal: 0x744BA78D6
• Base-36: ECAAPCM

Squares and roots of 31217842390

• 31217842390 squared (31217842390²) is 974553683486880912100
• 31217842390 cubed (31217842390³) is 30423463291687393946637243919000
• The square root of 31217842390 is 176685.7164289179
• The cube root of 31217842390 is 3148.7218259293

Scales and comparisons

• 31,217,842,390 seconds is equal to 992 years, 32 weeks, 5 days, 14 hours, 53 minutes, 10 seconds.
• To count from 1 to 31,217,842,390 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 31217842390 cubic inches would be around 262.4 feet tall.

Recreational maths with 31217842390

• 31217842390 backwards is 09324871213
• The number of decimal digits it has is: 11
• The sum of 31217842390's digits is 40
• More coming soon!