311311222231979 has 2 divisors, whose sum is σ = 311311222231980. Its totient is φ = 311311222231978.

The previous prime is 311311222231949. The next prime is 311311222232027. The reversal of 311311222231979 is 979132222113113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311311222231979 - 2¹² = 311311222227883 is a prime.

It is not a weakly prime, because it can be changed into another prime (311311222231909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155655611115989 + 155655611115990.

It is an arithmetic number, because the mean of its divisors is an integer number (155655611115990).

Almost surely, 2^{311311222231979} is an apocalyptic number.

311311222231979 is a deficient number, since it is larger than the sum of its proper divisors (1).

311311222231979 is an equidigital number, since it uses as much as digits as its factorization.

311311222231979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 47.

The spelling of 311311222231979 in words is "three hundred eleven trillion, three hundred eleven billion, two hundred twenty-two million, two hundred thirty-one thousand, nine hundred seventy-nine".