631313078 has 16 divisors (see below), whose sum is σ = 1066383360. Its totient is φ = 277703400.

The previous prime is 631313029. The next prime is 631313083. The reversal of 631313078 is 870313136.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462158 + ... + 463521.

It is an arithmetic number, because the mean of its divisors is an integer number (66648960).

Almost surely, 2^631313078 is an apocalyptic number.

631313078 is a deficient number, since it is larger than the sum of its proper divisors (435070282).

631313078 is a wasteful number, since it uses less digits than its factorization.

631313078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925723.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 631313078 is about 25125.9443205624. The cubic root of 631313078 is about 857.8570578520.

It can be divided in two parts, 6313 and 13078, that added together give a palindrome (19391).

The spelling of 631313078 in words is "six hundred thirty-one million, three hundred thirteen thousand, seventy-eight".