311442421019 has 2 divisors, whose sum is σ = 311442421020. Its totient is φ = 311442421018.

The previous prime is 311442421009. The next prime is 311442421057. The reversal of 311442421019 is 910124244113.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311442421019 is a prime.

It is a super-2 number, since 2×311442421019² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (311442421009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155721210509 + 155721210510.

It is an arithmetic number, because the mean of its divisors is an integer number (155721210510).

Almost surely, 2^311442421019 is an apocalyptic number.

311442421019 is a deficient number, since it is larger than the sum of its proper divisors (1).

311442421019 is an equidigital number, since it uses as much as digits as its factorization.

311442421019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 311442421019 in words is "three hundred eleven billion, four hundred forty-two million, four hundred twenty-one thousand, nineteen".