231632236638492 has 12 divisors (see below), whose sum is σ = 540475218823176. Its totient is φ = 77210745546160.

The previous prime is 231632236638403. The next prime is 231632236638527. The reversal of 231632236638492 is 294836632236132.

231632236638492 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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, 9651343193259 + ... + 9651343193282.

It is an arithmetic number, because the mean of its divisors is an integer number (45039601568598).

Almost surely, 2^{231632236638492} is an apocalyptic number.

It is an amenable number.

231632236638492 is an abundant number, since it is smaller than the sum of its proper divisors (308842982184684).

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

231632236638492 is a wasteful number, since it uses less digits than its factorization.

231632236638492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19302686386548 (or 19302686386546 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 60.

The spelling of 231632236638492 in words is "two hundred thirty-one trillion, six hundred thirty-two billion, two hundred thirty-six million, six hundred thirty-eight thousand, four hundred ninety-two".