231531501015032 has 16 divisors (see below), whose sum is σ = 443358193433760. Its totient is φ = 113302649432704.

The previous prime is 231531501014921. The next prime is 231531501015077. The reversal of 231531501015032 is 230510105135132.

It is a super-2 number, since 2×231531501015032² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231531501015032.

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, 307887633953 + ... + 307887634704.

It is an arithmetic number, because the mean of its divisors is an integer number (27709887089610).

Almost surely, 2^{231531501015032} is an apocalyptic number.

It is an amenable number.

231531501015032 is a deficient number, since it is larger than the sum of its proper divisors (211826692418728).

231531501015032 is a wasteful number, since it uses less digits than its factorization.

231531501015032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615775268710 (or 615775268706 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 32.

The spelling of 231531501015032 in words is "two hundred thirty-one trillion, five hundred thirty-one billion, five hundred one million, fifteen thousand, thirty-two".