631938132 has 48 divisors (see below), whose sum is σ = 1872411520. Its totient is φ = 180553536.

The previous prime is 631938107. The next prime is 631938211. The reversal of 631938132 is 231839136.

631938132 is a `hidden beast` number, since 631 + 9 + 3 + 8 + 13 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 417193 + ... + 418704.

Almost surely, 2^631938132 is an apocalyptic number.

It is an amenable number.

631938132 is an abundant number, since it is smaller than the sum of its proper divisors (1240473388).

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

631938132 is a wasteful number, since it uses less digits than its factorization.

631938132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835917 (or 835909 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 631938132 is about 25138.3796613863. The cubic root of 631938132 is about 858.1400817788.

The spelling of 631938132 in words is "six hundred thirty-one million, nine hundred thirty-eight thousand, one hundred thirty-two".