213311311979 has 2 divisors, whose sum is σ = 213311311980. Its totient is φ = 213311311978.

The previous prime is 213311311973. The next prime is 213311312003. The reversal of 213311311979 is 979113113312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213311311979 - 2¹² = 213311307883 is a prime.

It is not a weakly prime, because it can be changed into another prime (213311311973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106655655989 + 106655655990.

It is an arithmetic number, because the mean of its divisors is an integer number (106655655990).

Almost surely, 2^213311311979 is an apocalyptic number.

213311311979 is a deficient number, since it is larger than the sum of its proper divisors (1).

213311311979 is an equidigital number, since it uses as much as digits as its factorization.

213311311979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 41.

The spelling of 213311311979 in words is "two hundred thirteen billion, three hundred eleven million, three hundred eleven thousand, nine hundred seventy-nine".