12931404 has 24 divisors (see below), whose sum is σ = 30352560. Its totient is φ = 4284864.

The previous prime is 12931393. The next prime is 12931409. The reversal of 12931404 is 40413921.

It is a super-2 number, since 2×12931404² = 334442418822432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12931409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1039 + ... + 5190.

It is an arithmetic number, because the mean of its divisors is an integer number (1264690).

Almost surely, 2^12931404 is an apocalyptic number.

It is an amenable number.

12931404 is an abundant number, since it is smaller than the sum of its proper divisors (17421156).

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

12931404 is a wasteful number, since it uses less digits than its factorization.

12931404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6409 (or 6407 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 12931404 is about 3596.0261400607. The cubic root of 12931404 is about 234.7191695900.

The spelling of 12931404 in words is "twelve million, nine hundred thirty-one thousand, four hundred four".