216030223 has 2 divisors, whose sum is σ = 216030224. Its totient is φ = 216030222.

The previous prime is 216030181. The next prime is 216030229. The reversal of 216030223 is 322030612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216030223 - 2⁹ = 216029711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216030223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216030229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108015111 + 108015112.

It is an arithmetic number, because the mean of its divisors is an integer number (108015112).

Almost surely, 2^216030223 is an apocalyptic number.

216030223 is a deficient number, since it is larger than the sum of its proper divisors (1).

216030223 is an equidigital number, since it uses as much as digits as its factorization.

216030223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 216030223 is about 14697.9666280748. The cubic root of 216030223 is about 600.0279829542.

Adding to 216030223 its reverse (322030612), we get a palindrome (538060835).

The spelling of 216030223 in words is "two hundred sixteen million, thirty thousand, two hundred twenty-three".