631488040 has 32 divisors (see below), whose sum is σ = 1430271360. Its totient is φ = 250920000.

The previous prime is 631488037. The next prime is 631488041. The reversal of 631488040 is 40884136.

631488040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 631487987 and 631488005.

It is not an unprimeable number, because it can be changed into a prime (631488041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46236 + ... + 58315.

It is an arithmetic number, because the mean of its divisors is an integer number (44695980).

Almost surely, 2^631488040 is an apocalyptic number.

It is an amenable number.

631488040 is an abundant number, since it is smaller than the sum of its proper divisors (798783320).

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

631488040 is a wasteful number, since it uses less digits than its factorization.

631488040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104713 (or 104709 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 631488040 is about 25129.4257793528. The cubic root of 631488040 is about 857.9362993190.

The spelling of 631488040 in words is "six hundred thirty-one million, four hundred eighty-eight thousand, forty".