632431930 has 64 divisors (see below), whose sum is σ = 1275724800. Its totient is φ = 224156160.

The previous prime is 632431903. The next prime is 632431939. The reversal of 632431930 is 39134236.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a house number.

It is a junction number, because it is equal to n+sod(n) for n = 632431892 and 632431901.

It is not an unprimeable number, because it can be changed into a prime (632431939) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 559606 + ... + 560734.

It is an arithmetic number, because the mean of its divisors is an integer number (19933200).

Almost surely, 2^632431930 is an apocalyptic number.

632431930 is an abundant number, since it is smaller than the sum of its proper divisors (643292870).

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

632431930 is a wasteful number, since it uses less digits than its factorization.

632431930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 632431930 is about 25148.1993391177. The cubic root of 632431930 is about 858.3635411704.

The spelling of 632431930 in words is "six hundred thirty-two million, four hundred thirty-one thousand, nine hundred thirty".