318250913 has 2 divisors, whose sum is σ = 318250914. Its totient is φ = 318250912.

The previous prime is 318250909. The next prime is 318250937. The reversal of 318250913 is 319052813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274001809 + 44249104 = 16553^2 + 6652^2 .

It is a cyclic number.

It is not a de Polignac number, because 318250913 - 2² = 318250909 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 318250913.

It is not a weakly prime, because it can be changed into another prime (318250943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159125456 + 159125457.

It is an arithmetic number, because the mean of its divisors is an integer number (159125457).

Almost surely, 2^318250913 is an apocalyptic number.

It is an amenable number.

318250913 is a deficient number, since it is larger than the sum of its proper divisors (1).

318250913 is an equidigital number, since it uses as much as digits as its factorization.

318250913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 318250913 is about 17839.5883640851. The cubic root of 318250913 is about 682.7418942467.

The spelling of 318250913 in words is "three hundred eighteen million, two hundred fifty thousand, nine hundred thirteen".