311023203309979 has 2 divisors, whose sum is σ = 311023203309980. Its totient is φ = 311023203309978.

The previous prime is 311023203309971. The next prime is 311023203309983. The reversal of 311023203309979 is 979903302320113.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311023203309979 - 2³ = 311023203309971 is a prime.

It is not a weakly prime, because it can be changed into another prime (311023203309971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155511601654989 + 155511601654990.

It is an arithmetic number, because the mean of its divisors is an integer number (155511601654990).

Almost surely, 2^{311023203309979} is an apocalyptic number.

311023203309979 is a deficient number, since it is larger than the sum of its proper divisors (1).

311023203309979 is an equidigital number, since it uses as much as digits as its factorization.

311023203309979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1653372, while the sum is 52.

The spelling of 311023203309979 in words is "three hundred eleven trillion, twenty-three billion, two hundred three million, three hundred nine thousand, nine hundred seventy-nine".