31986146391

Names of 31986146391

• Cardinal: 31986146391 can be written as Thirty-one billion, nine hundred eighty-six million, one hundred forty-six thousand, three hundred ninety-one.

Scientific notation

• Scientific notation: 3.1986146391 × 10¹⁰

Factors of 31986146391

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 669

Divisors of 31986146391

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 17 19 23 37 51 57 69 79 111 237 323 391 437 491 629 703 851 969 1173 1311 1343 1473 1501 1817 1887 2109 2553 2923 4029 4503 5451 7429 8347 8769 9329 11293 11951 14467 16169 18167 22287 25041 25517 27987 30889 33879 34523 35853 38789 43401 48507 49691 54501 55537 67229 76551 92667 103569 116367 149073 158593 166611 191981 201687 214567 274873 308839 345173 417841 475779 575943 586891 643701 659413 736991 824619 892147 926517 944129 1035519 1142893 1253523 1277351 1435193 1760673 1978239 2210973 2676441 2832387 3428679 3647639 3832053 4305579 5867941 7103297 7938979 10942917 12528847 15166499 16950793 17603823 21309891 21714967 23816937 24398281 27268667 33009439 37586541 45499497 50852379 65144901 73194843 81806001 99028317 134962643 288163481 404887929 463567339 561160463 627179341 864490443 1390702017 1683481389 1881538023 10662048797 31986146391
• Sum of all divisors σ(n): 51690700800
• Sum of proper divisors (its aliquot sum) s(n): 19704554409
• 31986146391 is a deficient number, because the sum of its proper divisors (19704554409) is less than itself. Its deficiency is 12281591982

Bases of 31986146391

• Binary: 11101110010100001011101110001010111₂
• Hexadecimal: 0x77285DC57
• Base-36: EOZQ4IF

Squares and roots of 31986146391

• 31986146391 squared (31986146391²) is 1023113560946482324881
• 31986146391 cubed (31986146391³) is 32725460135051484160137687654471
• The square root of 31986146391 is 178846.7119938189
• The cube root of 31986146391 is 3174.3438871077

Scales and comparisons

• 31,986,146,391 seconds is equal to 1,017 years, 3 weeks, 1 day, 39 minutes, 51 seconds.
• To count from 1 to 31,986,146,391 would take you about two thousand and thirty-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 31986146391 cubic inches would be around 264.5 feet tall.

Recreational maths with 31986146391

• 31986146391 backwards is 19364168913
• 31986146391 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 31986146391's digits is 51
• More coming soon!