12979531 has 2 divisors, whose sum is σ = 12979532. Its totient is φ = 12979530.

The previous prime is 12979529. The next prime is 12979543. The reversal of 12979531 is 13597921.

12979531 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (13597921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12979531 - 2¹ = 12979529 is a prime.

It is a super-2 number, since 2×12979531² = 336936449959922, which contains 22 as substring.

Together with 12979529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12979511) 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, 6489765 + 6489766.

It is an arithmetic number, because the mean of its divisors is an integer number (6489766).

Almost surely, 2^12979531 is an apocalyptic number.

12979531 is a deficient number, since it is larger than the sum of its proper divisors (1).

12979531 is an equidigital number, since it uses as much as digits as its factorization.

12979531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 37.

The square root of 12979531 is about 3602.7116176569. The cubic root of 12979531 is about 235.0099950479.

The spelling of 12979531 in words is "twelve million, nine hundred seventy-nine thousand, five hundred thirty-one".