231506355640045 has 32 divisors (see below), whose sum is σ = 286323996752640. Its totient is φ = 179592477550080.

The previous prime is 231506355640037. The next prime is 231506355640057. The reversal of 231506355640045 is 540046553605132.

It is not a de Polignac number, because 231506355640045 - 2³ = 231506355640037 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, 25062135 + ... + 33032155.

It is an arithmetic number, because the mean of its divisors is an integer number (8947624898520).

Almost surely, 2^{231506355640045} is an apocalyptic number.

It is an amenable number.

231506355640045 is a deficient number, since it is larger than the sum of its proper divisors (54817641112595).

231506355640045 is a wasteful number, since it uses less digits than its factorization.

231506355640045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7971045.

The product of its (nonzero) digits is 6480000, while the sum is 49.

The spelling of 231506355640045 in words is "two hundred thirty-one trillion, five hundred six billion, three hundred fifty-five million, six hundred forty thousand, forty-five".