631545332 has 24 divisors (see below), whose sum is σ = 1269135840. Its totient is φ = 271956960.

The previous prime is 631545307. The next prime is 631545349. The reversal of 631545332 is 233545136.

It is a congruent number.

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, 376883 + ... + 378554.

It is an arithmetic number, because the mean of its divisors is an integer number (52880660).

Almost surely, 2^631545332 is an apocalyptic number.

It is an amenable number.

631545332 is an abundant number, since it is smaller than the sum of its proper divisors (637590508).

631545332 is a wasteful number, since it uses less digits than its factorization.

631545332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755471 (or 755469 counting only the distinct ones).

The product of its digits is 32400, while the sum is 32.

The square root of 631545332 is about 25130.5656920014. The cubic root of 631545332 is about 857.9622440701.

It can be divided in two parts, 63154 and 5332, that added together give a palindrome (68486).

The spelling of 631545332 in words is "six hundred thirty-one million, five hundred forty-five thousand, three hundred thirty-two".