311322123131 has 2 divisors, whose sum is σ = 311322123132. Its totient is φ = 311322123130.

The previous prime is 311322123097. The next prime is 311322123137. The reversal of 311322123131 is 131321223113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311322123131 - 2¹⁴ = 311322106747 is a prime.

It is a super-2 number, since 2×311322123131² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311322123097 and 311322123106.

It is not a weakly prime, because it can be changed into another prime (311322123137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155661061565 + 155661061566.

It is an arithmetic number, because the mean of its divisors is an integer number (155661061566).

Almost surely, 2^311322123131 is an apocalyptic number.

311322123131 is a deficient number, since it is larger than the sum of its proper divisors (1).

311322123131 is an equidigital number, since it uses as much as digits as its factorization.

311322123131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 23.

Adding to 311322123131 its reverse (131321223113), we get a palindrome (442643346244).

The spelling of 311322123131 in words is "three hundred eleven billion, three hundred twenty-two million, one hundred twenty-three thousand, one hundred thirty-one".