63131404 has 36 divisors (see below), whose sum is σ = 136084536. Its totient is φ = 25463424.

The previous prime is 63131399. The next prime is 63131413. The reversal of 63131404 is 40413136.

63131404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×63131404² = 7971148342022432, which contains 22 as substring.

It is a nialpdrome in base 14.

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 11 ways as a sum of consecutive naturals, for example, 6142 + ... + 12805.

It is an arithmetic number, because the mean of its divisors is an integer number (3780126).

Almost surely, 2^63131404 is an apocalyptic number.

It is an amenable number.

63131404 is an abundant number, since it is smaller than the sum of its proper divisors (72953132).

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

63131404 is a wasteful number, since it uses less digits than its factorization.

63131404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18982 (or 18973 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 63131404 is about 7945.5272952775. The cubic root of 63131404 is about 398.1821763071.

The spelling of 63131404 in words is "sixty-three million, one hundred thirty-one thousand, four hundred four".