631536432 has 40 divisors (see below), whose sum is σ = 1653827184. Its totient is φ = 207627264.

The previous prime is 631536427. The next prime is 631536469. The reversal of 631536432 is 234635136.

It is a junction number, because it is equal to n+sod(n) for n = 631536393 and 631536402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86613 + ... + 93620.

Almost surely, 2^631536432 is an apocalyptic number.

It is an amenable number.

631536432 is an abundant number, since it is smaller than the sum of its proper divisors (1022290752).

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

631536432 is a wasteful number, since it uses less digits than its factorization.

631536432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180317 (or 180311 counting only the distinct ones).

The product of its digits is 38880, while the sum is 33.

The square root of 631536432 is about 25130.3886161754. The cubic root of 631536432 is about 857.9582137973.

The spelling of 631536432 in words is "six hundred thirty-one million, five hundred thirty-six thousand, four hundred thirty-two".