231257081996 has 24 divisors (see below), whose sum is σ = 405054231120. Its totient is φ = 115527352832.

The previous prime is 231257081969. The next prime is 231257082029. The reversal of 231257081996 is 699180752132.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42688280 + ... + 42693696.

It is an arithmetic number, because the mean of its divisors is an integer number (16877259630).

Almost surely, 2^231257081996 is an apocalyptic number.

It is an amenable number.

231257081996 is a deficient number, since it is larger than the sum of its proper divisors (173797149124).

231257081996 is a wasteful number, since it uses less digits than its factorization.

231257081996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12793 (or 12791 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 231257081996 in words is "two hundred thirty-one billion, two hundred fifty-seven million, eighty-one thousand, nine hundred ninety-six".