631040044 has 12 divisors (see below), whose sum is σ = 1104615064. Its totient is φ = 315435744.

The previous prime is 631040041. The next prime is 631040063. The reversal of 631040044 is 440040136.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 631039997 and 631040024.

It is not an unprimeable number, because it can be changed into a prime (631040041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2382 + ... + 35605.

Almost surely, 2^631040044 is an apocalyptic number.

It is an amenable number.

631040044 is a deficient number, since it is larger than the sum of its proper divisors (473575020).

631040044 is a wasteful number, since it uses less digits than its factorization.

631040044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42144 (or 42142 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 631040044 is about 25120.5104247505. The cubic root of 631040044 is about 857.7333696608.

The spelling of 631040044 in words is "six hundred thirty-one million, forty thousand, forty-four".