12531313351315 has 64 divisors (see below), whose sum is σ = 16842905735040. Its totient is φ = 8873390592000.

The previous prime is 12531313351307. The next prime is 12531313351393. The reversal of 12531313351315 is 51315331313521.

It is a happy number.

It is not a de Polignac number, because 12531313351315 - 2³ = 12531313351307 is a prime.

It is a super-2 number, since 2×12531313351315² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 387986247 + ... + 388018543.

It is an arithmetic number, because the mean of its divisors is an integer number (263170402110).

Almost surely, 2^{12531313351315} is an apocalyptic number.

12531313351315 is a deficient number, since it is larger than the sum of its proper divisors (4311592383725).

12531313351315 is a wasteful number, since it uses less digits than its factorization.

12531313351315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33544.

The product of its digits is 60750, while the sum is 37.

Adding to 12531313351315 its reverse (51315331313521), we get a palindrome (63846644664836).

The spelling of 12531313351315 in words is "twelve trillion, five hundred thirty-one billion, three hundred thirteen million, three hundred fifty-one thousand, three hundred fifteen".