311303323 has 2 divisors, whose sum is σ = 311303324. Its totient is φ = 311303322.

The previous prime is 311303309. The next prime is 311303327. The reversal of 311303323 is 323303113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311303323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311303323.

It is not a weakly prime, because it can be changed into another prime (311303327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155651661 + 155651662.

It is an arithmetic number, because the mean of its divisors is an integer number (155651662).

Almost surely, 2^311303323 is an apocalyptic number.

311303323 is a deficient number, since it is larger than the sum of its proper divisors (1).

311303323 is an equidigital number, since it uses as much as digits as its factorization.

311303323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 311303323 is about 17643.7899273370. The cubic root of 311303323 is about 677.7370878128.

Adding to 311303323 its reverse (323303113), we get a palindrome (634606436).

It can be divided in two parts, 31130 and 3323, that added together give a triangular number (34453 = T₂₆₂).

The spelling of 311303323 in words is "three hundred eleven million, three hundred three thousand, three hundred twenty-three".