311323 has 2 divisors, whose sum is σ = 311324. Its totient is φ = 311322.

The previous prime is 311303. The next prime is 311329. The reversal of 311323 is 323113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311323 - 2⁵ = 311291 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (311329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155661 + 155662.

It is an arithmetic number, because the mean of its divisors is an integer number (155662).

2³¹¹³²³ is an apocalyptic number.

311323 is a deficient number, since it is larger than the sum of its proper divisors (1).

311323 is an equidigital number, since it uses as much as digits as its factorization.

311323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54, while the sum is 13.

The square root of 311323 is about 557.9632604393. The cubic root of 311323 is about 67.7751367082.

Adding to 311323 its reverse (323113), we get a palindrome (634436).

It can be divided in two parts, 3113 and 23, that added together give a square (3136 = 56²).

The spelling of 311323 in words is "three hundred eleven thousand, three hundred twenty-three", and thus it is an iban number.