318228413 has 2 divisors, whose sum is σ = 318228414. Its totient is φ = 318228412.

The previous prime is 318228401. The next prime is 318228433. The reversal of 318228413 is 314822813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317302969 + 925444 = 17813^2 + 962^2 .

It is a cyclic number.

It is not a de Polignac number, because 318228413 - 2¹⁰ = 318227389 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 318228413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318228433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159114206 + 159114207.

It is an arithmetic number, because the mean of its divisors is an integer number (159114207).

Almost surely, 2^318228413 is an apocalyptic number.

It is an amenable number.

318228413 is a deficient number, since it is larger than the sum of its proper divisors (1).

318228413 is an equidigital number, since it uses as much as digits as its factorization.

318228413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 32.

The square root of 318228413 is about 17838.9577330067. The cubic root of 318228413 is about 682.7258041597.

The spelling of 318228413 in words is "three hundred eighteen million, two hundred twenty-eight thousand, four hundred thirteen".