311303223323 has 2 divisors, whose sum is σ = 311303223324. Its totient is φ = 311303223322.

The previous prime is 311303223299. The next prime is 311303223367. The reversal of 311303223323 is 323322303113.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311303223323 - 2³⁸ = 36425316379 is a prime.

It is a super-2 number, since 2×311303223323² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 311303223292 and 311303223301.

It is not a weakly prime, because it can be changed into another prime (311303223223) 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, 155651611661 + 155651611662.

It is an arithmetic number, because the mean of its divisors is an integer number (155651611662).

Almost surely, 2^311303223323 is an apocalyptic number.

311303223323 is a deficient number, since it is larger than the sum of its proper divisors (1).

311303223323 is an equidigital number, since it uses as much as digits as its factorization.

311303223323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 311303223323 its reverse (323322303113), we get a palindrome (634625526436).

The spelling of 311303223323 in words is "three hundred eleven billion, three hundred three million, two hundred twenty-three thousand, three hundred twenty-three".