311440031430023 has 2 divisors, whose sum is σ = 311440031430024. Its totient is φ = 311440031430022.

The previous prime is 311440031430007. The next prime is 311440031430113. The reversal of 311440031430023 is 320034130044113.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311440031430023 - 2⁴ = 311440031430007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311440031433023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155720015715011 + 155720015715012.

It is an arithmetic number, because the mean of its divisors is an integer number (155720015715012).

Almost surely, 2^{311440031430023} is an apocalyptic number.

311440031430023 is a deficient number, since it is larger than the sum of its proper divisors (1).

311440031430023 is an equidigital number, since it uses as much as digits as its factorization.

311440031430023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 311440031430023 its reverse (320034130044113), we get a palindrome (631474161474136).

The spelling of 311440031430023 in words is "three hundred eleven trillion, four hundred forty billion, thirty-one million, four hundred thirty thousand, twenty-three".