11311312979 has 2 divisors, whose sum is σ = 11311312980. Its totient is φ = 11311312978.

The previous prime is 11311312949. The next prime is 11311313029. The reversal of 11311312979 is 97921311311.

It is a weak prime.

It is an emirp because it is prime and its reverse (97921311311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11311312979 - 2²⁸ = 11042877523 is a prime.

It is not a weakly prime, because it can be changed into another prime (11311312919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655656489 + 5655656490.

It is an arithmetic number, because the mean of its divisors is an integer number (5655656490).

Almost surely, 2^11311312979 is an apocalyptic number.

11311312979 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311312979 is an equidigital number, since it uses as much as digits as its factorization.

11311312979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 38.

The spelling of 11311312979 in words is "eleven billion, three hundred eleven million, three hundred twelve thousand, nine hundred seventy-nine".