631340456 has 8 divisors (see below), whose sum is σ = 1183763370. Its totient is φ = 315670224.

The previous prime is 631340447. The next prime is 631340459. The reversal of 631340456 is 654043136.

631340456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 500237956 + 131102500 = 22366^2 + 11450^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (631340459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39458771 + ... + 39458786.

Almost surely, 2^631340456 is an apocalyptic number.

It is an amenable number.

631340456 is a deficient number, since it is larger than the sum of its proper divisors (552422914).

631340456 is a wasteful number, since it uses less digits than its factorization.

631340456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78917563 (or 78917559 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 631340456 is about 25126.4891299998. The cubic root of 631340456 is about 857.8694584986.

The spelling of 631340456 in words is "six hundred thirty-one million, three hundred forty thousand, four hundred fifty-six".