63431404 has 12 divisors (see below), whose sum is σ = 112150024. Its totient is φ = 31388544.

The previous prime is 63431393. The next prime is 63431429. The reversal of 63431404 is 40413436.

It is a happy number.

It is a super-2 number, since 2×63431404² = 8047086026822432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81354 + ... + 82129.

Almost surely, 2^63431404 is an apocalyptic number.

It is an amenable number.

63431404 is a deficient number, since it is larger than the sum of its proper divisors (48718620).

63431404 is a wasteful number, since it uses less digits than its factorization.

63431404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163584 (or 163582 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 63431404 is about 7964.3834664084. The cubic root of 63431404 is about 398.8118995372.

The spelling of 63431404 in words is "sixty-three million, four hundred thirty-one thousand, four hundred four".