311322213019 has 2 divisors, whose sum is σ = 311322213020. Its totient is φ = 311322213018.

The previous prime is 311322213011. The next prime is 311322213073. The reversal of 311322213019 is 910312223113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311322213019 - 2³ = 311322213011 is a prime.

It is a super-2 number, since 2×311322213019² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (311322213011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155661106509 + 155661106510.

It is an arithmetic number, because the mean of its divisors is an integer number (155661106510).

Almost surely, 2^311322213019 is an apocalyptic number.

311322213019 is a deficient number, since it is larger than the sum of its proper divisors (1).

311322213019 is an equidigital number, since it uses as much as digits as its factorization.

311322213019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 311322213019 in words is "three hundred eleven billion, three hundred twenty-two million, two hundred thirteen thousand, nineteen".