311440042041431 has 2 divisors, whose sum is σ = 311440042041432. Its totient is φ = 311440042041430.

The previous prime is 311440042041389. The next prime is 311440042041503. The reversal of 311440042041431 is 134140240044113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311440042041431 - 2³⁰ = 311438968299607 is a prime.

It is a super-2 number, since 2×311440042041431² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311440042044431) 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, 155720021020715 + 155720021020716.

It is an arithmetic number, because the mean of its divisors is an integer number (155720021020716).

Almost surely, 2^{311440042041431} is an apocalyptic number.

311440042041431 is a deficient number, since it is larger than the sum of its proper divisors (1).

311440042041431 is an equidigital number, since it uses as much as digits as its factorization.

311440042041431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 311440042041431 its reverse (134140240044113), we get a palindrome (445580282085544).

The spelling of 311440042041431 in words is "three hundred eleven trillion, four hundred forty billion, forty-two million, forty-one thousand, four hundred thirty-one".