12307931 has 4 divisors (see below), whose sum is σ = 12516600. Its totient is φ = 12099264.

The previous prime is 12307927. The next prime is 12307957. The reversal of 12307931 is 13970321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13970321 = 271 ⋅51551.

It is a cyclic number.

It is not a de Polignac number, because 12307931 - 2² = 12307927 is a prime.

It is a super-2 number, since 2×12307931² = 302970331001522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12307931.

It is not an unprimeable number, because it can be changed into a prime (12307901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104246 + ... + 104363.

It is an arithmetic number, because the mean of its divisors is an integer number (3129150).

Almost surely, 2^12307931 is an apocalyptic number.

12307931 is a deficient number, since it is larger than the sum of its proper divisors (208669).

12307931 is an equidigital number, since it uses as much as digits as its factorization.

12307931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208668.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 12307931 is about 3508.2660959511. The cubic root of 12307931 is about 230.8846272065.

The spelling of 12307931 in words is "twelve million, three hundred seven thousand, nine hundred thirty-one".