318349 has 2 divisors, whose sum is σ = 318350. Its totient is φ = 318348.

The previous prime is 318347. The next prime is 318377. The reversal of 318349 is 943813.

It is an a-pointer prime, because the next prime (318377) can be obtained adding 318349 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310249 + 8100 = 557^2 + 90^2 .

It is a cyclic number.

It is not a de Polignac number, because 318349 - 2¹ = 318347 is a prime.

Together with 318347, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318347) 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, 159174 + 159175.

It is an arithmetic number, because the mean of its divisors is an integer number (159175).

2³¹⁸³⁴⁹ is an apocalyptic number.

It is an amenable number.

318349 is a deficient number, since it is larger than the sum of its proper divisors (1).

318349 is an equidigital number, since it uses as much as digits as its factorization.

318349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 318349 is about 564.2242462000. The cubic root of 318349 is about 68.2812028872.

The spelling of 318349 in words is "three hundred eighteen thousand, three hundred forty-nine".