231547923087 has 16 divisors (see below), whose sum is σ = 332547072480. Its totient is φ = 142461885312.

The previous prime is 231547923049. The next prime is 231547923091. The reversal of 231547923087 is 780329745132.

It is not a de Polignac number, because 231547923087 - 2⁷ = 231547922959 is a prime.

It is a super-2 number, since 2×231547923087² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231547923587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413268 + ... + 796169.

It is an arithmetic number, because the mean of its divisors is an integer number (20784192030).

Almost surely, 2^231547923087 is an apocalyptic number.

231547923087 is a deficient number, since it is larger than the sum of its proper divisors (100999149393).

231547923087 is a wasteful number, since it uses less digits than its factorization.

231547923087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214362.

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 231547923087 in words is "two hundred thirty-one billion, five hundred forty-seven million, nine hundred twenty-three thousand, eighty-seven".