18223 has 2 divisors, whose sum is σ = 18224. Its totient is φ = 18222.

The previous prime is 18217. The next prime is 18229. The reversal of 18223 is 32281.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (18217) and next prime (18229).

It is a cyclic number.

It is not a de Polignac number, because 18223 - 2⁵ = 18191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18197 and 18206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9111 + 9112.

It is an arithmetic number, because the mean of its divisors is an integer number (9112).

2¹⁸²²³ is an apocalyptic number.

18223 is a deficient number, since it is larger than the sum of its proper divisors (1).

18223 is an equidigital number, since it uses as much as digits as its factorization.

18223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 16.

The square root of 18223 is about 134.9925923894. The cubic root of 18223 is about 26.3151969691.

It can be divided in two parts, 182 and 23, that multiplied together give a triangular number (4186 = T₉₁).

The spelling of 18223 in words is "eighteen thousand, two hundred twenty-three".