216283 has 4 divisors (see below), whose sum is σ = 217288. Its totient is φ = 215280.

The previous prime is 216263. The next prime is 216289. The reversal of 216283 is 382612.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 216283 - 2⁹ = 215771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33 + ... + 658.

It is an arithmetic number, because the mean of its divisors is an integer number (54322).

2²¹⁶²⁸³ is an apocalyptic number.

216283 is a deficient number, since it is larger than the sum of its proper divisors (1005).

216283 is an equidigital number, since it uses as much as digits as its factorization.

216283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004.

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

The square root of 216283 is about 465.0623614097. The cubic root of 216283 is about 60.0261922681.

Adding to 216283 its reverse (382612), we get a palindrome (598895).

The spelling of 216283 in words is "two hundred sixteen thousand, two hundred eighty-three".