313343211949 has 2 divisors, whose sum is σ = 313343211950. Its totient is φ = 313343211948.

The previous prime is 313343211941. The next prime is 313343211967. The reversal of 313343211949 is 949112343313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311790457924 + 1552754025 = 558382^2 + 39405^2 .

It is a cyclic number.

It is not a de Polignac number, because 313343211949 - 2³ = 313343211941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313343211941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156671605974 + 156671605975.

It is an arithmetic number, because the mean of its divisors is an integer number (156671605975).

Almost surely, 2^313343211949 is an apocalyptic number.

It is an amenable number.

313343211949 is a deficient number, since it is larger than the sum of its proper divisors (1).

313343211949 is an equidigital number, since it uses as much as digits as its factorization.

313343211949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 43.

The spelling of 313343211949 in words is "three hundred thirteen billion, three hundred forty-three million, two hundred eleven thousand, nine hundred forty-nine".