231887951604 has 48 divisors (see below), whose sum is σ = 601434388800. Its totient is φ = 77264689248.

The previous prime is 231887951591. The next prime is 231887951609. The reversal of 231887951604 is 406159788132.

231887951604 is a `hidden beast` number, since 2 + 318 + 87 + 95 + 160 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231887951609) 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, 165894 + ... + 700925.

It is an arithmetic number, because the mean of its divisors is an integer number (12529883100).

It is a 1-persistent number, because it is pandigital, but 2⋅231887951604 = 463775903208 is not.

Almost surely, 2^231887951604 is an apocalyptic number.

It is an amenable number.

231887951604 is an abundant number, since it is smaller than the sum of its proper divisors (369546437196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231887951604 is a wasteful number, since it uses less digits than its factorization.

231887951604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869309 (or 869301 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

It can be divided in two parts, 231887 and 951604, that added together give a triangular number (1183491 = T₁₅₃₈).

The spelling of 231887951604 in words is "two hundred thirty-one billion, eight hundred eighty-seven million, nine hundred fifty-one thousand, six hundred four".