12931879 has 2 divisors, whose sum is σ = 12931880. Its totient is φ = 12931878.

The previous prime is 12931861. The next prime is 12931889. The reversal of 12931879 is 97813921.

12931879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12931879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12931829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6465939 + 6465940.

It is an arithmetic number, because the mean of its divisors is an integer number (6465940).

Almost surely, 2^12931879 is an apocalyptic number.

12931879 is a deficient number, since it is larger than the sum of its proper divisors (1).

12931879 is an equidigital number, since it uses as much as digits as its factorization.

12931879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 40.

The square root of 12931879 is about 3596.0921845804. The cubic root of 12931879 is about 234.7220434785.

The spelling of 12931879 in words is "twelve million, nine hundred thirty-one thousand, eight hundred seventy-nine".