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23115491343 = 3372393971289
BaseRepresentation
bin10101100001110010…
…100110100000001111
32012122221212121221000
4111201302212200033
5334320031210333
614341421111343
71445552302020
oct254162464017
965587777830
1023115491343
11989210185a
1245913b8553
132244c97b39
141193d92c47
15904524713
hex561ca680f

23115491343 has 64 divisors (see below), whose sum is σ = 39430656000. Its totient is φ = 13110273792.

The previous prime is 23115491299. The next prime is 23115491363. The reversal of 23115491343 is 34319451132.

23115491343 is a `hidden beast` number, since 23 + 115 + 491 + 34 + 3 = 666.

It is not a de Polignac number, because 23115491343 - 29 = 23115490831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23115491298 and 23115491307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23115491363) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17932243 + ... + 17933531.

It is an arithmetic number, because the mean of its divisors is an integer number (616104000).

Almost surely, 223115491343 is an apocalyptic number.

23115491343 is a deficient number, since it is larger than the sum of its proper divisors (16315164657).

23115491343 is a wasteful number, since it uses less digits than its factorization.

23115491343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941 (or 1935 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The spelling of 23115491343 in words is "twenty-three billion, one hundred fifteen million, four hundred ninety-one thousand, three hundred forty-three".

Divisors: 1 3 7 9 21 27 63 189 239 397 717 1191 1289 1673 2151 2779 3573 3867 5019 6453 8337 9023 10719 11601 15057 25011 27069 34803 45171 75033 81207 94883 243621 284649 308071 511733 664181 853947 924213 1535199 1992543 2156497 2561841 2772639 3582131 4605597 5977629 6469491 8317917 10746393 13816791 17932887 19408473 32239179 58225419 96717537 122304187 366912561 856129309 1100737683 2568387927 3302213049 7705163781 23115491343