311324873 has 2 divisors, whose sum is σ = 311324874. Its totient is φ = 311324872.

The previous prime is 311324863. The next prime is 311324911. The reversal of 311324873 is 378423113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 309865609 + 1459264 = 17603^2 + 1208^2 .

It is a cyclic number.

It is not a de Polignac number, because 311324873 - 2⁴ = 311324857 is a prime.

It is a super-2 number, since 2×311324873² = 193846353096932258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (311324863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155662436 + 155662437.

It is an arithmetic number, because the mean of its divisors is an integer number (155662437).

Almost surely, 2^311324873 is an apocalyptic number.

It is an amenable number.

311324873 is a deficient number, since it is larger than the sum of its proper divisors (1).

311324873 is an equidigital number, since it uses as much as digits as its factorization.

311324873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 32.

The square root of 311324873 is about 17644.4006132257. The cubic root of 311324873 is about 677.7527262551.

Adding to 311324873 its reverse (378423113), we get a palindrome (689747986).

The spelling of 311324873 in words is "three hundred eleven million, three hundred twenty-four thousand, eight hundred seventy-three".