231203331988 has 6 divisors (see below), whose sum is σ = 404605830986. Its totient is φ = 115601665992.

The previous prime is 231203331971. The next prime is 231203332021. The reversal of 231203331988 is 889133302132.

It can be written as a sum of positive squares in only one way, i.e., 183237075844 + 47966256144 = 428062^2 + 219012^2 .

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, 28900416495 + ... + 28900416502.

Almost surely, 2^231203331988 is an apocalyptic number.

It is an amenable number.

231203331988 is a deficient number, since it is larger than the sum of its proper divisors (173402498998).

231203331988 is a wasteful number, since it uses less digits than its factorization.

231203331988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57800833001 (or 57800832999 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 231203331988 in words is "two hundred thirty-one billion, two hundred three million, three hundred thirty-one thousand, nine hundred eighty-eight".