231321433204 has 6 divisors (see below), whose sum is σ = 404812508114. Its totient is φ = 115660716600.

The previous prime is 231321433183. The next prime is 231321433219. The reversal of 231321433204 is 402334123132.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 161883913104 + 69437520100 = 402348^2 + 263510^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28915179147 + ... + 28915179154.

Almost surely, 2^231321433204 is an apocalyptic number.

It is an amenable number.

231321433204 is a deficient number, since it is larger than the sum of its proper divisors (173491074910).

231321433204 is a wasteful number, since it uses less digits than its factorization.

231321433204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57830358305 (or 57830358303 counting only the distinct ones).

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

Adding to 231321433204 its reverse (402334123132), we get a palindrome (633655556336).

The spelling of 231321433204 in words is "two hundred thirty-one billion, three hundred twenty-one million, four hundred thirty-three thousand, two hundred four".