311053421519 has 2 divisors, whose sum is σ = 311053421520. Its totient is φ = 311053421518.

The previous prime is 311053421443. The next prime is 311053421573. The reversal of 311053421519 is 915124350113.

It is a strong prime.

It is an emirp because it is prime and its reverse (915124350113) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311053421519 is a prime.

It is a super-2 number, since 2×311053421519² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311053421719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155526710759 + 155526710760.

It is an arithmetic number, because the mean of its divisors is an integer number (155526710760).

Almost surely, 2^311053421519 is an apocalyptic number.

311053421519 is a deficient number, since it is larger than the sum of its proper divisors (1).

311053421519 is an equidigital number, since it uses as much as digits as its factorization.

311053421519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 35.

The spelling of 311053421519 in words is "three hundred eleven billion, fifty-three million, four hundred twenty-one thousand, five hundred nineteen".