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23123080431 = 3211233566469
BaseRepresentation
bin10101100010001111…
…100011010011101111
32012200111011012012100
4111202033203103233
5334324002033211
614342251510143
71446003640443
oct254217432357
965614135170
1023123080431
119896415630
124593a58353
132246724219
141194daa823
15905023156
hex5623e34ef

23123080431 has 12 divisors (see below), whose sum is σ = 36436369320. Its totient is φ = 14013988080.

The previous prime is 23123080397. The next prime is 23123080439. The reversal of 23123080431 is 13408032132.

23123080431 is a `hidden beast` number, since 2 + 312 + 308 + 0 + 43 + 1 = 666.

It is not a de Polignac number, because 23123080431 - 27 = 23123080303 is a prime.

It is a super-2 number, since 2×231230804312 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23123080395 and 23123080404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123080439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116783136 + ... + 116783333.

It is an arithmetic number, because the mean of its divisors is an integer number (3036364110).

Almost surely, 223123080431 is an apocalyptic number.

23123080431 is a deficient number, since it is larger than the sum of its proper divisors (13313288889).

23123080431 is a wasteful number, since it uses less digits than its factorization.

23123080431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233566486 (or 233566483 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 23123080431 in words is "twenty-three billion, one hundred twenty-three million, eighty thousand, four hundred thirty-one".

Divisors: 1 3 9 11 33 99 233566469 700699407 2102098221 2569231159 7707693477 23123080431