631438552 has 32 divisors (see below), whose sum is σ = 1264881600. Its totient is φ = 294633504.

The previous prime is 631438543. The next prime is 631438583. The reversal of 631438552 is 255834136.

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, 20818 + ... + 41185.

It is an arithmetic number, because the mean of its divisors is an integer number (39527550).

Almost surely, 2^631438552 is an apocalyptic number.

It is an amenable number.

631438552 is an abundant number, since it is smaller than the sum of its proper divisors (633443048).

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

631438552 is a wasteful number, since it uses less digits than its factorization.

631438552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62095 (or 62091 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 631438552 is about 25128.4410976885. The cubic root of 631438552 is about 857.9138873555.

The spelling of 631438552 in words is "six hundred thirty-one million, four hundred thirty-eight thousand, five hundred fifty-two".