311690338979 has 2 divisors, whose sum is σ = 311690338980. Its totient is φ = 311690338978.

The previous prime is 311690338903. The next prime is 311690339017. The reversal of 311690338979 is 979833096113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311690338979 - 2²⁰ = 311689290403 is a prime.

It is not a weakly prime, because it can be changed into another prime (311690332979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155845169489 + 155845169490.

It is an arithmetic number, because the mean of its divisors is an integer number (155845169490).

Almost surely, 2^311690338979 is an apocalyptic number.

311690338979 is a deficient number, since it is larger than the sum of its proper divisors (1).

311690338979 is an equidigital number, since it uses as much as digits as its factorization.

311690338979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6613488, while the sum is 59.

The spelling of 311690338979 in words is "three hundred eleven billion, six hundred ninety million, three hundred thirty-eight thousand, nine hundred seventy-nine".