231632236638550 has 96 divisors (see below), whose sum is σ = 470683479195360. Its totient is φ = 84108003993600.

The previous prime is 231632236638527. The next prime is 231632236638563. The reversal of 231632236638550 is 55836632236132.

It is a super-2 number, since 2×231632236638550² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a junction number, because it is equal to n+sod(n) for n = 231632236638491 and 231632236638500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1283638932 + ... + 1283819368.

It is an arithmetic number, because the mean of its divisors is an integer number (4902952908285).

Almost surely, 2^{231632236638550} is an apocalyptic number.

231632236638550 is an abundant number, since it is smaller than the sum of its proper divisors (239051242556810).

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

231632236638550 is a wasteful number, since it uses less digits than its factorization.

231632236638550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183826 (or 183821 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 55.

The spelling of 231632236638550 in words is "two hundred thirty-one trillion, six hundred thirty-two billion, two hundred thirty-six million, six hundred thirty-eight thousand, five hundred fifty".