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23131033086 = 2371943674099
BaseRepresentation
bin10101100010101101…
…111000110111111110
32012201001010020012010
4111202231320313332
5334333021024321
614343134152050
71446131352150
oct254255706776
965631106163
1023131033086
11989a957577
124596652626
132248279c35
14119607aad0
15905a94676
hex562b78dfe

23131033086 has 64 divisors (see below), whose sum is σ = 56947968000. Its totient is φ = 6115417056.

The previous prime is 23131033049. The next prime is 23131033087. The reversal of 23131033086 is 68033013132.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131033087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 302736 + ... + 371363.

It is an arithmetic number, because the mean of its divisors is an integer number (889812000).

Almost surely, 223131033086 is an apocalyptic number.

23131033086 is an abundant number, since it is smaller than the sum of its proper divisors (33816934914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23131033086 is a wasteful number, since it uses less digits than its factorization.

23131033086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674173.

The product of its (nonzero) digits is 7776, while the sum is 30.

The spelling of 23131033086 in words is "twenty-three billion, one hundred thirty-one million, thirty-three thousand, eighty-six".

Divisors: 1 2 3 6 7 14 19 21 38 42 43 57 86 114 129 133 258 266 301 399 602 798 817 903 1634 1806 2451 4902 5719 11438 17157 34314 674099 1348198 2022297 4044594 4718693 9437386 12807881 14156079 25615762 28312158 28986257 38423643 57972514 76847286 86958771 89655167 173917542 179310334 202903799 268965501 405807598 537931002 550738883 608711397 1101477766 1217422794 1652216649 3304433298 3855172181 7710344362 11565516543 23131033086