631147532 has 48 divisors (see below), whose sum is σ = 1171648800. Its totient is φ = 297024000.

The previous prime is 631147523. The next prime is 631147549. The reversal of 631147532 is 235741136.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1542944 + ... + 1543352.

It is an arithmetic number, because the mean of its divisors is an integer number (24409350).

Almost surely, 2^631147532 is an apocalyptic number.

It is an amenable number.

631147532 is a deficient number, since it is larger than the sum of its proper divisors (540501268).

631147532 is a wasteful number, since it uses less digits than its factorization.

631147532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746 (or 744 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 631147532 is about 25122.6497806262. The cubic root of 631147532 is about 857.7820674738.

Adding to 631147532 its reverse (235741136), we get a palindrome (866888668).

The spelling of 631147532 in words is "six hundred thirty-one million, one hundred forty-seven thousand, five hundred thirty-two".