216233 has 2 divisors, whose sum is σ = 216234. Its totient is φ = 216232.

The previous prime is 216217. The next prime is 216259. The reversal of 216233 is 332612.

216233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162409 + 53824 = 403^2 + 232^2 .

It is a cyclic number.

It is not a de Polignac number, because 216233 - 2⁴ = 216217 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 216233.

It is not a weakly prime, because it can be changed into another prime (216263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108116 + 108117.

It is an arithmetic number, because the mean of its divisors is an integer number (108117).

2²¹⁶²³³ is an apocalyptic number.

It is an amenable number.

216233 is a deficient number, since it is larger than the sum of its proper divisors (1).

216233 is an equidigital number, since it uses as much as digits as its factorization.

216233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 17.

The square root of 216233 is about 465.0086020710. The cubic root of 216233 is about 60.0215663214.

Adding to 216233 its reverse (332612), we get a palindrome (548845).

The spelling of 216233 in words is "two hundred sixteen thousand, two hundred thirty-three".