231894632828 has 6 divisors (see below), whose sum is σ = 405815607456. Its totient is φ = 115947316412.

The previous prime is 231894632789. The next prime is 231894632867. The reversal of 231894632828 is 828236498132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231894632789) and next prime (231894632867).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28986829100 + ... + 28986829107.

It is an arithmetic number, because the mean of its divisors is an integer number (67635934576).

Almost surely, 2^231894632828 is an apocalyptic number.

It is an amenable number.

231894632828 is a deficient number, since it is larger than the sum of its proper divisors (173920974628).

231894632828 is a wasteful number, since it uses less digits than its factorization.

231894632828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57973658211 (or 57973658209 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 56.

The spelling of 231894632828 in words is "two hundred thirty-one billion, eight hundred ninety-four million, six hundred thirty-two thousand, eight hundred twenty-eight".