318319 has 2 divisors, whose sum is σ = 318320. Its totient is φ = 318318.

The previous prime is 318313. The next prime is 318323. The reversal of 318319 is 913813.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 318319 - 2⁵ = 318287 is a prime.

It is a super-2 number, since 2×318319² = 202653971522, which contains 22 as substring.

318319 is a lucky number.

It is a plaindrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 318293 and 318302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318313) 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, 159159 + 159160.

It is an arithmetic number, because the mean of its divisors is an integer number (159160).

2³¹⁸³¹⁹ is an apocalyptic number.

318319 is a deficient number, since it is larger than the sum of its proper divisors (1).

318319 is an equidigital number, since it uses as much as digits as its factorization.

318319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 25.

The square root of 318319 is about 564.1976603993. The cubic root of 318319 is about 68.2790579661.

The spelling of 318319 in words is "three hundred eighteen thousand, three hundred nineteen".