311323131323 has 2 divisors, whose sum is σ = 311323131324. Its totient is φ = 311323131322.

The previous prime is 311323131299. The next prime is 311323131359. The reversal of 311323131323 is 323131323113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311323131323 - 2¹⁰ = 311323130299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311323131292 and 311323131301.

It is not a weakly prime, because it can be changed into another prime (311323131023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155661565661 + 155661565662.

It is an arithmetic number, because the mean of its divisors is an integer number (155661565662).

Almost surely, 2^311323131323 is an apocalyptic number.

311323131323 is a deficient number, since it is larger than the sum of its proper divisors (1).

311323131323 is an equidigital number, since it uses as much as digits as its factorization.

311323131323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 26.

Adding to 311323131323 its reverse (323131323113), we get a palindrome (634454454436).

The spelling of 311323131323 in words is "three hundred eleven billion, three hundred twenty-three million, one hundred thirty-one thousand, three hundred twenty-three".