311544323 has 2 divisors, whose sum is σ = 311544324. Its totient is φ = 311544322.

The previous prime is 311544319. The next prime is 311544347. The reversal of 311544323 is 323445113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311544323 - 2² = 311544319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311544292 and 311544301.

It is not a weakly prime, because it can be changed into another prime (311544313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155772161 + 155772162.

It is an arithmetic number, because the mean of its divisors is an integer number (155772162).

Almost surely, 2^311544323 is an apocalyptic number.

311544323 is a deficient number, since it is larger than the sum of its proper divisors (1).

311544323 is an equidigital number, since it uses as much as digits as its factorization.

311544323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 26.

The square root of 311544323 is about 17650.6182044709. The cubic root of 311544323 is about 677.9119360448.

Adding to 311544323 its reverse (323445113), we get a palindrome (634989436).

The spelling of 311544323 in words is "three hundred eleven million, five hundred forty-four thousand, three hundred twenty-three".