315515323551231 has 24 divisors (see below), whose sum is σ = 456620942922144. Its totient is φ = 209939028776640.

The previous prime is 315515323551221. The next prime is 315515323551299. The reversal of 315515323551231 is 132155323515513.

315515323551231 is a `hidden beast` number, since 3 + 1 + 5 + 5 + 1 + 53 + 23 + 551 + 23 + 1 = 666.

It is not a de Polignac number, because 315515323551231 - 2²³ = 315515315162623 is a prime.

It is a super-2 number, since 2×315515323551231² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315515323551221) 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, 62811510 + ... + 67648476.

It is an arithmetic number, because the mean of its divisors is an integer number (19025872621756).

Almost surely, 2^{315515323551231} is an apocalyptic number.

315515323551231 is a deficient number, since it is larger than the sum of its proper divisors (141105619370913).

315515323551231 is a wasteful number, since it uses less digits than its factorization.

315515323551231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4850911 (or 4850908 counting only the distinct ones).

The product of its digits is 1012500, while the sum is 45.

The spelling of 315515323551231 in words is "three hundred fifteen trillion, five hundred fifteen billion, three hundred twenty-three million, five hundred fifty-one thousand, two hundred thirty-one".