318226 has 4 divisors (see below), whose sum is σ = 477342. Its totient is φ = 159112.

The previous prime is 318211. The next prime is 318229. The reversal of 318226 is 622813.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 308025 + 10201 = 555^2 + 101^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 318197 and 318206.

It is not an unprimeable number, because it can be changed into a prime (318229) by changing a digit.

318226 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79555 + ... + 79558.

2³¹⁸²²⁶ is an apocalyptic number.

318226 is a deficient number, since it is larger than the sum of its proper divisors (159116).

318226 is a wasteful number, since it uses less digits than its factorization.

318226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159115.

The product of its digits is 576, while the sum is 22.

The square root of 318226 is about 564.1152364544. The cubic root of 318226 is about 68.2724078542.

The spelling of 318226 in words is "three hundred eighteen thousand, two hundred twenty-six".