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23137005318 = 237319591709
BaseRepresentation
bin10101100011000100…
…101010111100000110
32012201110100122112220
4111203010222330012
5334341033132233
614343510153210
71446233205000
oct254304527406
965643318486
1023137005318
1198a32665a9
124598652806
13224958b3bb
141196b93370
15906373eb3
hex56312af06

23137005318 has 64 divisors (see below), whose sum is σ = 56804160000. Its totient is φ = 6262637472.

The previous prime is 23137005271. The next prime is 23137005349. The reversal of 23137005318 is 81350073132.

It is a super-2 number, since 2×231370053182 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256753 + ... + 334956.

It is an arithmetic number, because the mean of its divisors is an integer number (887565000).

Almost surely, 223137005318 is an apocalyptic number.

23137005318 is an abundant number, since it is smaller than the sum of its proper divisors (33667154682).

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

23137005318 is a wasteful number, since it uses less digits than its factorization.

23137005318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591754 (or 591740 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

It can be divided in two parts, 231 and 37005318, that multiplied together give a palindrome (8548228458).

The spelling of 23137005318 in words is "twenty-three billion, one hundred thirty-seven million, five thousand, three hundred eighteen".

Divisors: 1 2 3 6 7 14 19 21 38 42 49 57 98 114 133 147 266 294 343 399 686 798 931 1029 1862 2058 2793 5586 6517 13034 19551 39102 591709 1183418 1775127 3550254 4141963 8283926 11242471 12425889 22484942 24851778 28993741 33727413 57987482 67454826 78697297 86981223 157394594 173962446 202956187 236091891 405912374 472183782 550881079 608868561 1101762158 1217737122 1652643237 3305286474 3856167553 7712335106 11568502659 23137005318