Base | Representation |
---|---|
bin | 1111100111100… |
… | …01100111000001 |
3 | 100010112011010110 |
4 | 13303301213001 |
5 | 232014404212 |
6 | 21000021533 |
7 | 3150410160 |
oct | 763614701 |
9 | 303464113 |
10 | 131013057 |
11 | 67a5405a |
12 | 37a618a9 |
13 | 211b1926 |
14 | 135853d7 |
15 | b77da3c |
hex | 7cf19c1 |
131013057 has 16 divisors (see below), whose sum is σ = 199808000. Its totient is φ = 74801232.
The previous prime is 131013031. The next prime is 131013079. The reversal of 131013057 is 750310131.
It is not a de Polignac number, because 131013057 - 26 = 131012993 is a prime.
It is a super-2 number, since 2×1310130572 = 34328842208970498, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (21).
It is not an unprimeable number, because it can be changed into a prime (131013457) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35694 + ... + 39192.
It is an arithmetic number, because the mean of its divisors is an integer number (12488000).
Almost surely, 2131013057 is an apocalyptic number.
It is an amenable number.
131013057 is a deficient number, since it is larger than the sum of its proper divisors (68794943).
131013057 is a wasteful number, since it uses less digits than its factorization.
131013057 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5292.
The product of its (nonzero) digits is 315, while the sum is 21.
The square root of 131013057 is about 11446.0935257406. The cubic root of 131013057 is about 507.8921808606.
Adding to 131013057 its reverse (750310131), we get a palindrome (881323188).
The spelling of 131013057 in words is "one hundred thirty-one million, thirteen thousand, fifty-seven".
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