231632236638551 has 8 divisors (see below), whose sum is σ = 264723477004800. Its totient is φ = 198541226483928.

The previous prime is 231632236638527. The next prime is 231632236638563. The reversal of 231632236638551 is 155836632236132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231632236638551 - 2²² = 231632232444247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231632236638851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55391411 + ... + 59426196.

It is an arithmetic number, because the mean of its divisors is an integer number (33090434625600).

Almost surely, 2^{231632236638551} is an apocalyptic number.

231632236638551 is a deficient number, since it is larger than the sum of its proper divisors (33091240366249).

231632236638551 is a wasteful number, since it uses less digits than its factorization.

231632236638551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115105813.

The product of its digits is 27993600, while the sum is 56.

The spelling of 231632236638551 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-one".