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13051125231 = 310740657711
BaseRepresentation
bin11000010011110100…
…00101110111101111
31020200112222212002120
430021322011313233
5203212042001411
65555014524023
7641263506534
oct141172056757
936615885076
1013051125231
115598024611
122642966613
1312ccb62311
148bb476d8b
15515ba0106
hex309e85def

13051125231 has 8 divisors (see below), whose sum is σ = 17564131584. Its totient is φ = 8619434520.

The previous prime is 13051125163. The next prime is 13051125337. The reversal of 13051125231 is 13252115031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13051125231 - 27 = 13051125103 is a prime.

It is a super-2 number, since 2×130511252312 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13051125431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20328535 + ... + 20329176.

It is an arithmetic number, because the mean of its divisors is an integer number (2195516448).

Almost surely, 213051125231 is an apocalyptic number.

13051125231 is a deficient number, since it is larger than the sum of its proper divisors (4513006353).

13051125231 is a wasteful number, since it uses less digits than its factorization.

13051125231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40657821.

The product of its (nonzero) digits is 900, while the sum is 24.

The spelling of 13051125231 in words is "thirteen billion, fifty-one million, one hundred twenty-five thousand, two hundred thirty-one".

Divisors: 1 3 107 321 40657711 121973133 4350375077 13051125231