12131975 has 12 divisors (see below), whose sum is σ = 15836040. Its totient is φ = 9194400.

The previous prime is 12131963. The next prime is 12132011. The reversal of 12131975 is 57913121.

It is not a de Polignac number, because 12131975 - 2¹² = 12127879 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 12296 + ... + 13245.

It is an arithmetic number, because the mean of its divisors is an integer number (1319670).

Almost surely, 2^12131975 is an apocalyptic number.

12131975 is a deficient number, since it is larger than the sum of its proper divisors (3704065).

12131975 is a wasteful number, since it uses less digits than its factorization.

12131975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25570 (or 25565 counting only the distinct ones).

The product of its digits is 1890, while the sum is 29.

The square root of 12131975 is about 3483.0984769311. The cubic root of 12131975 is about 229.7790884528.

The spelling of 12131975 in words is "twelve million, one hundred thirty-one thousand, nine hundred seventy-five".