311440311030131 has 2 divisors, whose sum is σ = 311440311030132. Its totient is φ = 311440311030130.

The previous prime is 311440311030073. The next prime is 311440311030143. The reversal of 311440311030131 is 131030113044113.

It is a strong prime.

It is an emirp because it is prime and its reverse (131030113044113) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311440311030131 is a prime.

It is a super-2 number, since 2×311440311030131² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 311440311030131.

It is not a weakly prime, because it can be changed into another prime (311440311030161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155720155515065 + 155720155515066.

It is an arithmetic number, because the mean of its divisors is an integer number (155720155515066).

Almost surely, 2^{311440311030131} is an apocalyptic number.

311440311030131 is a deficient number, since it is larger than the sum of its proper divisors (1).

311440311030131 is an equidigital number, since it uses as much as digits as its factorization.

311440311030131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 311440311030131 its reverse (131030113044113), we get a palindrome (442470424074244).

The spelling of 311440311030131 in words is "three hundred eleven trillion, four hundred forty billion, three hundred eleven million, thirty thousand, one hundred thirty-one".