63431982 has 48 divisors (see below), whose sum is σ = 140821200. Its totient is φ = 20630016.

The previous prime is 63431971. The next prime is 63431987. The reversal of 63431982 is 28913436.

63431982 is a `hidden beast` number, since 634 + 3 + 19 + 8 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63431987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179518 + ... + 179870.

It is an arithmetic number, because the mean of its divisors is an integer number (2933775).

Almost surely, 2^63431982 is an apocalyptic number.

63431982 is an abundant number, since it is smaller than the sum of its proper divisors (77389218).

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

63431982 is a wasteful number, since it uses less digits than its factorization.

63431982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577 (or 574 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 63431982 is about 7964.4197528759. The cubic root of 63431982 is about 398.8131108855.

The spelling of 63431982 in words is "sixty-three million, four hundred thirty-one thousand, nine hundred eighty-two".