12931379 has 2 divisors, whose sum is σ = 12931380. Its totient is φ = 12931378.

The previous prime is 12931363. The next prime is 12931393. The reversal of 12931379 is 97313921.

It is a strong prime.

It is an emirp because it is prime and its reverse (97313921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12931379 - 2⁴ = 12931363 is a prime.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (12931319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6465689 + 6465690.

It is an arithmetic number, because the mean of its divisors is an integer number (6465690).

Almost surely, 2^12931379 is an apocalyptic number.

12931379 is a deficient number, since it is larger than the sum of its proper divisors (1).

12931379 is an equidigital number, since it uses as much as digits as its factorization.

12931379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 35.

The square root of 12931379 is about 3596.0226639998. The cubic root of 12931379 is about 234.7190183307.

The spelling of 12931379 in words is "twelve million, nine hundred thirty-one thousand, three hundred seventy-nine".