31212757890

Names of 31212757890

• Cardinal: 31212757890 can be written as Thirty-one billion, two hundred twelve million, seven hundred fifty-seven thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 3.121275789 × 10¹⁰

Factors of 31212757890

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 3429

Divisors of 31212757890

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 23 27 30 45 46 54 69 81 90 115 135 138 162 207 230 270 345 405 414 599 621 690 810 1035 1198 1242 1797 1863 2070 2797 2995 3105 3594 3726 5391 5594 5990 6210 8391 8985 9315 10782 13777 13985 16173 16782 17970 18630 25173 26955 27554 27970 32346 41331 41955 48519 50346 53910 64331 68885 75519 80865 82662 83910 97038 123993 125865 128662 137770 151038 161730 192993 206655 226557 242595 247986 251730 321655 371979 377595 385986 413310 453114 485190 578979 619965 643310 743958 755190 964965 1115937 1132785 1157958 1239930 1675403 1736937 1859895 1929930 2231874 2265570 2894895 3350806 3473874 3719790 5026209 5210811 5579685 5789790 8377015 8684685 10052418 10421622 11159370 15078627 16754030 17369370 25131045 26054055 30157254 38534269 45235881 50262090 52108110 75393135 77068538 90471762 115602807 135707643 150786270 192671345 226179405 231205614 271415286 346808421 385342690 452358810 578014035 678538215 693616842 1040425263 1156028070 1357076430 1734042105 2080850526 3121275789 3468084210 5202126315 6242551578 10404252630 15606378945 31212757890
• Sum of all divisors σ(n): 87754233600
• Sum of proper divisors (its aliquot sum) s(n): 56541475710
• 31212757890 is an abundant number, because the sum of its proper divisors (56541475710) is greater than itself. Its abundance is 25328717820

Bases of 31212757890

• Binary: 11101000100011011001110001110000010₂
• Hexadecimal: 0x7446CE382
• Base-36: EC79Q4I

Squares and roots of 31212757890

• 31212757890 squared (31212757890²) is 974236255099757252100
• 31212757890 cubed (31212757890³) is 30408600358089000907568994069000
• The square root of 31212757890 is 176671.3273001593
• The cube root of 31212757890 is 3148.5508708583

Scales and comparisons

• 31,212,757,890 seconds is equal to 992 years, 24 weeks, 2 days, 18 hours, 31 minutes, 30 seconds.
• To count from 1 to 31,212,757,890 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 31212757890 cubic inches would be around 262.4 feet tall.

Recreational maths with 31212757890

• 31212757890 backwards is 09875721213
• 31212757890 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 31212757890's digits is 45
• More coming soon!