12131804 has 12 divisors (see below), whose sum is σ = 22348200. Its totient is φ = 5746608.

The previous prime is 12131789. The next prime is 12131813. The reversal of 12131804 is 40813121.

It is a congruent number.

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, 79739 + ... + 79890.

It is an arithmetic number, because the mean of its divisors is an integer number (1862350).

Almost surely, 2^12131804 is an apocalyptic number.

It is an amenable number.

12131804 is a deficient number, since it is larger than the sum of its proper divisors (10216396).

12131804 is a wasteful number, since it uses less digits than its factorization.

12131804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159652 (or 159650 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 12131804 is about 3483.0739297351. The cubic root of 12131804 is about 229.7780088702.

Adding to 12131804 its reverse (40813121), we get a palindrome (52944925).

The spelling of 12131804 in words is "twelve million, one hundred thirty-one thousand, eight hundred four".