311423863 has 2 divisors, whose sum is σ = 311423864. Its totient is φ = 311423862.

The previous prime is 311423843. The next prime is 311423869. The reversal of 311423863 is 368324113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311423863 - 2⁵ = 311423831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311423869) 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, 155711931 + 155711932.

It is an arithmetic number, because the mean of its divisors is an integer number (155711932).

Almost surely, 2^311423863 is an apocalyptic number.

311423863 is a deficient number, since it is larger than the sum of its proper divisors (1).

311423863 is an equidigital number, since it uses as much as digits as its factorization.

311423863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 311423863 is about 17647.2055294882. The cubic root of 311423863 is about 677.8245522250.

Adding to 311423863 its reverse (368324113), we get a palindrome (679747976).

The spelling of 311423863 in words is "three hundred eleven million, four hundred twenty-three thousand, eight hundred sixty-three".