12779311 has 2 divisors, whose sum is σ = 12779312. Its totient is φ = 12779310.

The previous prime is 12779309. The next prime is 12779321. The reversal of 12779311 is 11397721.

It is a weak prime.

It is an emirp because it is prime and its reverse (11397721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12779311 - 2¹ = 12779309 is a prime.

Together with 12779309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12779321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6389655 + 6389656.

It is an arithmetic number, because the mean of its divisors is an integer number (6389656).

Almost surely, 2^12779311 is an apocalyptic number.

12779311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12779311 is an equidigital number, since it uses as much as digits as its factorization.

12779311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2646, while the sum is 31.

The square root of 12779311 is about 3574.8162190524. The cubic root of 12779311 is about 233.7953198371.

The spelling of 12779311 in words is "twelve million, seven hundred seventy-nine thousand, three hundred eleven".