231331045215 has 32 divisors (see below), whose sum is σ = 379236888576. Its totient is φ = 120342083840.

The previous prime is 231331045193. The next prime is 231331045247. The reversal of 231331045215 is 512540133132.

It is a de Polignac number, because none of the positive numbers 2^k-231331045215 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3091534 + ... + 3165476.

It is an arithmetic number, because the mean of its divisors is an integer number (11851152768).

Almost surely, 2^231331045215 is an apocalyptic number.

231331045215 is a deficient number, since it is larger than the sum of its proper divisors (147905843361).

231331045215 is a wasteful number, since it uses less digits than its factorization.

231331045215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79079.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 231331045215 its reverse (512540133132), we get a palindrome (743871178347).

The spelling of 231331045215 in words is "two hundred thirty-one billion, three hundred thirty-one million, forty-five thousand, two hundred fifteen".