1313256523131 has 24 divisors (see below), whose sum is σ = 2167976077280. Its totient is φ = 750411340416.

The previous prime is 1313256523127. The next prime is 1313256523151.

1313256523131 is a `hidden beast` number, since 1 + 3 + 1 + 32 + 565 + 2 + 31 + 31 = 666.

1313256523131 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1313256523131 - 2² = 1313256523127 is a prime.

It is a super-2 number, since 2×1313256523131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313256523151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2142801 + ... + 2686653.

Almost surely, 2^{1313256523131} is an apocalyptic number.

1313256523131 is a deficient number, since it is larger than the sum of its proper divisors (854719554149).

1313256523131 is a wasteful number, since it uses less digits than its factorization.

1313256523131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582195 (or 582192 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The spelling of 1313256523131 in words is "one trillion, three hundred thirteen billion, two hundred fifty-six million, five hundred twenty-three thousand, one hundred thirty-one".