318989311 has 2 divisors, whose sum is σ = 318989312. Its totient is φ = 318989310.

The previous prime is 318989269. The next prime is 318989327. The reversal of 318989311 is 113989813.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 318989311 - 2¹⁵ = 318956543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318989371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159494655 + 159494656.

It is an arithmetic number, because the mean of its divisors is an integer number (159494656).

Almost surely, 2^318989311 is an apocalyptic number.

318989311 is a deficient number, since it is larger than the sum of its proper divisors (1).

318989311 is an equidigital number, since it uses as much as digits as its factorization.

318989311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 43.

The square root of 318989311 is about 17860.2718624326. The cubic root of 318989311 is about 683.2695134263.

It can be divided in two parts, 31898 and 9311, that added together give a square (41209 = 203²).

The spelling of 318989311 in words is "three hundred eighteen million, nine hundred eighty-nine thousand, three hundred eleven".