23231531232 has 144 divisors (see below), whose sum is σ = 81310451040. Its totient is φ = 6126990336.

The previous prime is 23231531221. The next prime is 23231531243. The reversal of 23231531232 is 23213513232.

It is a happy number.

23231531232 is a `hidden beast` number, since 2 + 3 + 2 + 315 + 312 + 32 = 666.

It is an interprime number because it is at equal distance from previous prime (23231531221) and next prime (23231531243).

It is a tau number, because it is divible by the number of its divisors (144).

It is a junction number, because it is equal to n+sod(n) for n = 23231531196 and 23231531205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 417007 + ... + 469422.

It is an arithmetic number, because the mean of its divisors is an integer number (564655910).

Almost surely, 2^23231531232 is an apocalyptic number.

It is an amenable number.

23231531232 is an abundant number, since it is smaller than the sum of its proper divisors (58078919808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23231531232 is a wasteful number, since it uses less digits than its factorization.

23231531232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886465 (or 886454 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The spelling of 23231531232 in words is "twenty-three billion, two hundred thirty-one million, five hundred thirty-one thousand, two hundred thirty-two".