631213004 has 24 divisors (see below), whose sum is σ = 1121734656. Its totient is φ = 310730000.

The previous prime is 631213001. The next prime is 631213031. The reversal of 631213004 is 400312136.

It is not an unprimeable number, because it can be changed into a prime (631213001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325919 + ... + 327849.

It is an arithmetic number, because the mean of its divisors is an integer number (46738944).

Almost surely, 2^631213004 is an apocalyptic number.

It is an amenable number.

631213004 is a deficient number, since it is larger than the sum of its proper divisors (490521652).

631213004 is a wasteful number, since it uses less digits than its factorization.

631213004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157 (or 3155 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 631213004 is about 25123.9527940967. The cubic root of 631213004 is about 857.8117270820.

The spelling of 631213004 in words is "six hundred thirty-one million, two hundred thirteen thousand, four".