23231404 has 12 divisors (see below), whose sum is σ = 46462864. Its totient is φ = 9956304.

The previous prime is 23231399. The next prime is 23231473. The reversal of 23231404 is 40413232.

23231404 is an admirable number.

It is a super-2 number, since 2×23231404² = 1079396263622432, 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, 414819 + ... + 414874.

Almost surely, 2^23231404 is an apocalyptic number.

It is an amenable number.

23231404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

23231404 is a wasteful number, since it uses less digits than its factorization.

23231404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829704 (or 829702 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 23231404 is about 4819.8966793905. The cubic root of 23231404 is about 285.3372595077.

Adding to 23231404 its reverse (40413232), we get a palindrome (63644636).

The spelling of 23231404 in words is "twenty-three million, two hundred thirty-one thousand, four hundred four".