311442355867 has 2 divisors, whose sum is σ = 311442355868. Its totient is φ = 311442355866.

The previous prime is 311442355837. The next prime is 311442355883. The reversal of 311442355867 is 768553244113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311442355867 - 2¹⁹ = 311441831579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311442355867.

It is not a weakly prime, because it can be changed into another prime (311442355837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155721177933 + 155721177934.

It is an arithmetic number, because the mean of its divisors is an integer number (155721177934).

Almost surely, 2^311442355867 is an apocalyptic number.

311442355867 is a deficient number, since it is larger than the sum of its proper divisors (1).

311442355867 is an equidigital number, since it uses as much as digits as its factorization.

311442355867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2419200, while the sum is 49.

The spelling of 311442355867 in words is "three hundred eleven billion, four hundred forty-two million, three hundred fifty-five thousand, eight hundred sixty-seven".