12404131 has 4 divisors (see below), whose sum is σ = 13057000. Its totient is φ = 11751264.

The previous prime is 12404089. The next prime is 12404143. The reversal of 12404131 is 13140421.

12404131 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12404131 - 2⁷ = 12404003 is a prime.

It is a super-2 number, since 2×12404131² = 307724931730322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12404191) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 326406 + ... + 326443.

It is an arithmetic number, because the mean of its divisors is an integer number (3264250).

Almost surely, 2^12404131 is an apocalyptic number.

12404131 is a deficient number, since it is larger than the sum of its proper divisors (652869).

12404131 is an equidigital number, since it uses as much as digits as its factorization.

12404131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652868.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 12404131 is about 3521.9498860716. The cubic root of 12404131 is about 231.4846057370.

Adding to 12404131 its reverse (13140421), we get a palindrome (25544552).

The spelling of 12404131 in words is "twelve million, four hundred four thousand, one hundred thirty-one".