318819113 has 2 divisors, whose sum is σ = 318819114. Its totient is φ = 318819112.

The previous prime is 318819103. The next prime is 318819119. The reversal of 318819113 is 311918813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 297631504 + 21187609 = 17252^2 + 4603^2 .

It is a cyclic number.

It is not a de Polignac number, because 318819113 - 2²² = 314624809 is a prime.

It is not a weakly prime, because it can be changed into another prime (318819119) 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, 159409556 + 159409557.

It is an arithmetic number, because the mean of its divisors is an integer number (159409557).

Almost surely, 2^318819113 is an apocalyptic number.

It is an amenable number.

318819113 is a deficient number, since it is larger than the sum of its proper divisors (1).

318819113 is an equidigital number, since it uses as much as digits as its factorization.

318819113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 35.

The square root of 318819113 is about 17855.5065175984. The cubic root of 318819113 is about 683.1479714297.

The spelling of 318819113 in words is "three hundred eighteen million, eight hundred nineteen thousand, one hundred thirteen".