311455022054389 has 2 divisors, whose sum is σ = 311455022054390. Its totient is φ = 311455022054388.

The previous prime is 311455022054383. The next prime is 311455022054489. The reversal of 311455022054389 is 983450220554113.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 301810531563025 + 9644490491364 = 17372695^2 + 3105558^2 .

It is a cyclic number.

It is not a de Polignac number, because 311455022054389 - 2⁷ = 311455022054261 is a prime.

It is a super-3 number, since 3×311455022054389³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311455022054383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155727511027194 + 155727511027195.

It is an arithmetic number, because the mean of its divisors is an integer number (155727511027195).

Almost surely, 2^{311455022054389} is an apocalyptic number.

It is an amenable number.

311455022054389 is a deficient number, since it is larger than the sum of its proper divisors (1).

311455022054389 is an equidigital number, since it uses as much as digits as its factorization.

311455022054389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184000, while the sum is 52.

The spelling of 311455022054389 in words is "three hundred eleven trillion, four hundred fifty-five billion, twenty-two million, fifty-four thousand, three hundred eighty-nine".