12967931 has 4 divisors (see below), whose sum is σ = 13284264. Its totient is φ = 12651600.

The previous prime is 12967891. The next prime is 12967949. The reversal of 12967931 is 13976921.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12967931 is a prime.

It is a super-2 number, since 2×12967931² = 336334468841522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12967961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158105 + ... + 158186.

It is an arithmetic number, because the mean of its divisors is an integer number (3321066).

Almost surely, 2^12967931 is an apocalyptic number.

12967931 is a deficient number, since it is larger than the sum of its proper divisors (316333).

12967931 is an equidigital number, since it uses as much as digits as its factorization.

12967931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316332.

The product of its digits is 20412, while the sum is 38.

The square root of 12967931 is about 3601.1013593066. The cubic root of 12967931 is about 234.9399635378.

The spelling of 12967931 in words is "twelve million, nine hundred sixty-seven thousand, nine hundred thirty-one".