12956311 has 2 divisors, whose sum is σ = 12956312. Its totient is φ = 12956310.

The previous prime is 12956303. The next prime is 12956351. The reversal of 12956311 is 11365921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12956311 - 2³ = 12956303 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12956311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12956351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6478155 + 6478156.

It is an arithmetic number, because the mean of its divisors is an integer number (6478156).

Almost surely, 2^12956311 is an apocalyptic number.

12956311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12956311 is an equidigital number, since it uses as much as digits as its factorization.

12956311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 28.

The square root of 12956311 is about 3599.4876024234. The cubic root of 12956311 is about 234.8697694003.

The spelling of 12956311 in words is "twelve million, nine hundred fifty-six thousand, three hundred eleven".