Base | Representation |
---|---|
bin | 11000010011110100… |
… | …00101110111101111 |
3 | 1020200112222212002120 |
4 | 30021322011313233 |
5 | 203212042001411 |
6 | 5555014524023 |
7 | 641263506534 |
oct | 141172056757 |
9 | 36615885076 |
10 | 13051125231 |
11 | 5598024611 |
12 | 2642966613 |
13 | 12ccb62311 |
14 | 8bb476d8b |
15 | 515ba0106 |
hex | 309e85def |
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".
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