216336223 has 4 divisors (see below), whose sum is σ = 227722360. Its totient is φ = 204950088.

The previous prime is 216336199. The next prime is 216336227. The reversal of 216336223 is 322633612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216336223 - 2⁵ = 216336191 is a prime.

It is a super-2 number, since 2×216336223² = 93602722763811458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216336191 and 216336200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216336227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5693040 + ... + 5693077.

It is an arithmetic number, because the mean of its divisors is an integer number (56930590).

Almost surely, 2^216336223 is an apocalyptic number.

216336223 is a deficient number, since it is larger than the sum of its proper divisors (11386137).

216336223 is a wasteful number, since it uses less digits than its factorization.

216336223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11386136.

The product of its digits is 7776, while the sum is 28.

The square root of 216336223 is about 14708.3725476342. The cubic root of 216336223 is about 600.3111562011.

Adding to 216336223 its reverse (322633612), we get a palindrome (538969835).

The spelling of 216336223 in words is "two hundred sixteen million, three hundred thirty-six thousand, two hundred twenty-three".