631342423566 has 12 divisors (see below), whose sum is σ = 1367908584432. Its totient is φ = 210447474516.

The previous prime is 631342423529. The next prime is 631342423573. The reversal of 631342423566 is 665324243136.

631342423566 is a `hidden beast` number, since 6 + 3 + 1 + 3 + 42 + 42 + 3 + 566 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17537289526 + ... + 17537289561.

It is an arithmetic number, because the mean of its divisors is an integer number (113992382036).

Almost surely, 2^631342423566 is an apocalyptic number.

631342423566 is an abundant number, since it is smaller than the sum of its proper divisors (736566160866).

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

631342423566 is a wasteful number, since it uses less digits than its factorization.

631342423566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35074579095 (or 35074579092 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 45.

The spelling of 631342423566 in words is "six hundred thirty-one billion, three hundred forty-two million, four hundred twenty-three thousand, five hundred sixty-six".