311323201019 has 2 divisors, whose sum is σ = 311323201020. Its totient is φ = 311323201018.

The previous prime is 311323200983. The next prime is 311323201037. The reversal of 311323201019 is 910102323113.

It is a strong prime.

It is an emirp because it is prime and its reverse (910102323113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311323201019 - 2⁸ = 311323200763 is a prime.

It is a super-2 number, since 2×311323201019² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (311323201039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155661600509 + 155661600510.

It is an arithmetic number, because the mean of its divisors is an integer number (155661600510).

Almost surely, 2^311323201019 is an apocalyptic number.

311323201019 is a deficient number, since it is larger than the sum of its proper divisors (1).

311323201019 is an equidigital number, since it uses as much as digits as its factorization.

311323201019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 311323201019 in words is "three hundred eleven billion, three hundred twenty-three million, two hundred one thousand, nineteen".