318260473 has 2 divisors, whose sum is σ = 318260474. Its totient is φ = 318260472.

The previous prime is 318260443. The next prime is 318260497. The reversal of 318260473 is 374062813.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293539689 + 24720784 = 17133^2 + 4972^2 .

It is an emirp because it is prime and its reverse (374062813) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318260473 is a prime.

It is not a weakly prime, because it can be changed into another prime (318260443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159130236 + 159130237.

It is an arithmetic number, because the mean of its divisors is an integer number (159130237).

Almost surely, 2^318260473 is an apocalyptic number.

It is an amenable number.

318260473 is a deficient number, since it is larger than the sum of its proper divisors (1).

318260473 is an equidigital number, since it uses as much as digits as its factorization.

318260473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 318260473 is about 17839.8563054751. The cubic root of 318260473 is about 682.7487305163.

The spelling of 318260473 in words is "three hundred eighteen million, two hundred sixty thousand, four hundred seventy-three".