31491839016891

Names of 31491839016891

• Cardinal: 31491839016891 can be written as Thirty-one trillion, four hundred ninety-one billion, eight hundred thirty-nine million, sixteen thousand, eight hundred ninety-one.

Scientific notation

• Scientific notation: 3.1491839016891 × 10¹³

Factors of 31491839016891

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 225

Divisors of 31491839016891

• Number of divisors d(n): 156
• Complete list of divisors:
  1 3 9 11 27 33 81 99 121 211 243 297 363 633 729 891 1089 1331 1899 2187 2321 2673 3267 3993 5697 6561 6963 8019 9801 11979 17091 19683 20889 24057 25531 29403 35937 44521 51273 59049 62667 72171 76593 88209 107811 133563 153819 177147 188001 216513 229779 264627 280841 323433 400689 461457 489731 531441 564003 649539 689337 793881 842523 970299 1202067 1384371 1469193 1692009 1948617 2068011 2381643 2527569 2910897 3606201 4153113 4407579 5076027 5387041 5845851 6204033 7144929 7582707 8732691 10818603 12459339 13222737 15228081 16161123 18612099 21434787 22748121 26198073 32455809 37378017 39668211 45684243 48483369 55836297 59257451 64304361 68244363 78594219 97367427 112134051 119004633 137052729 145450107 167508891 177772353 204733089 235782657 292102281 357013899 411158187 436350321 502526673 533317059 614199267 707347971 876306843 1071041697 1233474561 1309050963 1507580019 1599951177 1842597801 2628920529 3213125091 3927152889 4522740057 4799853531 5527793403 7886761587 9639375273 11781458667 13568220171 14399560593 16583380209 23660284761 28918125819 35344376001 43198681779 49750140627 86754377457 106033128003 129596045337 149250421881 260263132371 318099384009 388788136011 954298152027 1166364408033 2862894456081 3499093224099 10497279672297 31491839016891
• Sum of all divisors σ(n): 52205366011032
• Sum of proper divisors (its aliquot sum) s(n): 20713526994141
• 31491839016891 is a deficient number, because the sum of its proper divisors (20713526994141) is less than itself. Its deficiency is 10778312022750

Bases of 31491839016891

• Binary: 111001010010001000011111000001011111110111011₂
• Hexadecimal: 0x1CA443E0BFBB
• Base-36: B5V5FUSOR

Squares and roots of 31491839016891

• 31491839016891 squared (31491839016891²) is 991735924665778305383305881
• 31491839016891 cubed (31491839016891³) is 31231588086842230706353563448434578635971
• The square root of 31491839016891 is 5611758.9949044497
• The cube root of 31491839016891 is 31579.0703609659

Scales and comparisons

• 31,491,839,016,891 seconds is equal to 1,001,343 years, 3 weeks, 4 days, 12 hours, 14 minutes, 51 seconds.
• To count from 1 to 31,491,839,016,891 would take you about two million, five hundred three thousand, three hundred fifty-seven 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 31491839016891 cubic inches would be around 2631.6 feet tall.

Recreational maths with 31491839016891

• 31491839016891 backwards is 19861093819413
• The number of decimal digits it has is: 14
• The sum of 31491839016891's digits is 63
• More coming soon!