231304433212 has 6 divisors (see below), whose sum is σ = 404782758128. Its totient is φ = 115652216604.

The previous prime is 231304433189. The next prime is 231304433219. The reversal of 231304433212 is 212334403132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231304433219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28913054148 + ... + 28913054155.

Almost surely, 2^231304433212 is an apocalyptic number.

It is an amenable number.

231304433212 is a deficient number, since it is larger than the sum of its proper divisors (173478324916).

231304433212 is a wasteful number, since it uses less digits than its factorization.

231304433212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57826108307 (or 57826108305 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 231304433212 its reverse (212334403132), we get a palindrome (443638836344).

The spelling of 231304433212 in words is "two hundred thirty-one billion, three hundred four million, four hundred thirty-three thousand, two hundred twelve".