311442004331 has 2 divisors, whose sum is σ = 311442004332. Its totient is φ = 311442004330.

The previous prime is 311442004297. The next prime is 311442004343. The reversal of 311442004331 is 133400244113.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (133400244113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311442004331 - 2⁶ = 311442004267 is a prime.

It is a super-2 number, since 2×311442004331² (a number of 24 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 311442004331.

It is not a weakly prime, because it can be changed into another prime (311442024331) 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 as a sum of consecutive naturals, namely, 155721002165 + 155721002166.

It is an arithmetic number, because the mean of its divisors is an integer number (155721002166).

Almost surely, 2^311442004331 is an apocalyptic number.

311442004331 is a deficient number, since it is larger than the sum of its proper divisors (1).

311442004331 is an equidigital number, since it uses as much as digits as its factorization.

311442004331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 311442004331 its reverse (133400244113), we get a palindrome (444842248444).

The spelling of 311442004331 in words is "three hundred eleven billion, four hundred forty-two million, four thousand, three hundred thirty-one".