31389208920

Names of 31389208920

• Cardinal: 31389208920 can be written as Thirty-one billion, three hundred eighty-nine million, two hundred eight thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 3.138920892 × 10¹⁰

Factors of 31389208920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1050602

Divisors of 31389208920

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 83 90 120 166 180 249 332 360 415 498 664 747 830 996 1245 1494 1660 1992 2490 2988 3320 3735 4980 5976 7470 9960 14940 29880 1050509 2101018 3151527 4202036 5252545 6303054 8404072 9454581 10505090 12606108 15757635 18909162 21010180 25212216 31515270 37818324 42020360 47272905 63030540 75636648 87192247 94545810 126061080 174384494 189091620 261576741 348768988 378183240 435961235 523153482 697537976 784730223 871922470 1046306964 1307883705 1569460446 1743844940 2092613928 2615767410 3138920892 3487689880 3923651115 5231534820 6277841784 7847302230 10463069640 15694604460 31389208920
• Sum of all divisors σ(n): 103244122800
• Sum of proper divisors (its aliquot sum) s(n): 71854913880
• 31389208920 is an abundant number, because the sum of its proper divisors (71854913880) is greater than itself. Its abundance is 40465704960

Bases of 31389208920

• Binary: 11101001110111100010101000101011000₂
• Hexadecimal: 0x74EF15158
• Base-36: EF4BOM0

Squares and roots of 31389208920

• 31389208920 squared (31389208920²) is 985282436623407566400
• 31389208920 cubed (31389208920³) is 30927236248378799464038372288000
• The square root of 31389208920 is 177170.0000564429
• The cube root of 31389208920 is 3154.4728234619

Scales and comparisons

• 31,389,208,920 seconds is equal to 998 years, 4 weeks, 1 day, 42 minutes.
• To count from 1 to 31,389,208,920 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 31389208920 cubic inches would be around 262.9 feet tall.

Recreational maths with 31389208920

• 31389208920 backwards is 02980298313
• 31389208920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 31389208920's digits is 45
• More coming soon!