231513450215015 has 8 divisors (see below), whose sum is σ = 278042190827040. Its totient is φ = 185060059792672.

The previous prime is 231513450214799. The next prime is 231513450215051. The reversal of 231513450215015 is 510512054315132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231513450215015 - 2²² = 231513446020711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231513450215015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18837540659 + ... + 18837552948.

It is an arithmetic number, because the mean of its divisors is an integer number (34755273853380).

Almost surely, 2^{231513450215015} is an apocalyptic number.

231513450215015 is a deficient number, since it is larger than the sum of its proper divisors (46528740612025).

231513450215015 is a wasteful number, since it uses less digits than its factorization.

231513450215015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37675094841.

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 231513450215015 in words is "two hundred thirty-one trillion, five hundred thirteen billion, four hundred fifty million, two hundred fifteen thousand, fifteen".