63931318 has 12 divisors (see below), whose sum is σ = 105407820. Its totient is φ = 29059580.

The previous prime is 63931297. The next prime is 63931319. The reversal of 63931318 is 81313936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63931319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131848 + ... + 132331.

It is an arithmetic number, because the mean of its divisors is an integer number (8783985).

Almost surely, 2^63931318 is an apocalyptic number.

63931318 is a deficient number, since it is larger than the sum of its proper divisors (41476502).

63931318 is a wasteful number, since it uses less digits than its factorization.

63931318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264203 (or 264192 counting only the distinct ones).

The product of its digits is 11664, while the sum is 34.

The square root of 63931318 is about 7995.7062227173. The cubic root of 63931318 is about 399.8568612844.

The spelling of 63931318 in words is "sixty-three million, nine hundred thirty-one thousand, three hundred eighteen".