631691852 has 24 divisors (see below), whose sum is σ = 1210334160. Its totient is φ = 286090560.

The previous prime is 631691779. The next prime is 631691873. The reversal of 631691852 is 258196136.

631691852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 13727 + ... + 38102.

It is an arithmetic number, because the mean of its divisors is an integer number (50430590).

Almost surely, 2^631691852 is an apocalyptic number.

It is an amenable number.

631691852 is a deficient number, since it is larger than the sum of its proper divisors (578642308).

631691852 is a wasteful number, since it uses less digits than its factorization.

631691852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52121 (or 52119 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 631691852 is about 25133.4806980649. The cubic root of 631691852 is about 858.0285886914.

The spelling of 631691852 in words is "six hundred thirty-one million, six hundred ninety-one thousand, eight hundred fifty-two".