231257071832 has 16 divisors (see below), whose sum is σ = 433899811800. Its totient is φ = 115550455360.

The previous prime is 231257071817. The next prime is 231257071841. The reversal of 231257071832 is 238170752132.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 231257071832.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9747482 + ... + 9771177.

Almost surely, 2^231257071832 is an apocalyptic number.

It is an amenable number.

231257071832 is a deficient number, since it is larger than the sum of its proper divisors (202642739968).

231257071832 is a wasteful number, since it uses less digits than its factorization.

231257071832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19520146 (or 19520142 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 231257071832 in words is "two hundred thirty-one billion, two hundred fifty-seven million, seventy-one thousand, eight hundred thirty-two".