311320053143 has 4 divisors (see below), whose sum is σ = 339621876168. Its totient is φ = 283018230120.

The previous prime is 311320053133. The next prime is 311320053157. The reversal of 311320053143 is 341350023113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 311320053143 - 2⁸ = 311320052887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311320053103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14150911496 + ... + 14150911517.

It is an arithmetic number, because the mean of its divisors is an integer number (84905469042).

Almost surely, 2^311320053143 is an apocalyptic number.

311320053143 is a deficient number, since it is larger than the sum of its proper divisors (28301823025).

311320053143 is a wasteful number, since it uses less digits than its factorization.

311320053143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28301823024.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 311320053143 its reverse (341350023113), we get a palindrome (652670076256).

The spelling of 311320053143 in words is "three hundred eleven billion, three hundred twenty million, fifty-three thousand, one hundred forty-three".