216023 has 2 divisors, whose sum is σ = 216024. Its totient is φ = 216022.

The previous prime is 215983. The next prime is 216037. The reversal of 216023 is 320612.

It is an a-pointer prime, because the next prime (216037) can be obtained adding 216023 to its sum of digits (14).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216023 - 2⁶ = 215959 is a prime.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 215989 and 216007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108011 + 108012.

It is an arithmetic number, because the mean of its divisors is an integer number (108012).

216023 is a Friedman number, since it can be written as 60^3+22+1, using all its digits and the basic arithmetic operations.

2²¹⁶⁰²³ is an apocalyptic number.

216023 is a deficient number, since it is larger than the sum of its proper divisors (1).

216023 is an equidigital number, since it uses as much as digits as its factorization.

216023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 216023 is about 464.7827449465. The cubic root of 216023 is about 60.0021295540.

Adding to 216023 its reverse (320612), we get a palindrome (536635).

The spelling of 216023 in words is "two hundred sixteen thousand, twenty-three".