223318 has 4 divisors (see below), whose sum is σ = 334980. Its totient is φ = 111658.

The previous prime is 223313. The next prime is 223319. The reversal of 223318 is 813322.

It is a happy number.

223318 is nontrivially palindromic in base 12.

223318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 813322 = 2 ⋅406661.

It is a junction number, because it is equal to n+sod(n) for n = 223295 and 223304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55828 + ... + 55831.

It is an arithmetic number, because the mean of its divisors is an integer number (83745).

2²²³³¹⁸ is an apocalyptic number.

223318 is a deficient number, since it is larger than the sum of its proper divisors (111662).

223318 is a wasteful number, since it uses less digits than its factorization.

223318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111661.

The product of its digits is 288, while the sum is 19.

The square root of 223318 is about 472.5653393976. The cubic root of 223318 is about 60.6700812526.

The spelling of 223318 in words is "two hundred twenty-three thousand, three hundred eighteen".