216224023 has 4 divisors (see below), whose sum is σ = 216311400. Its totient is φ = 216136648.

The previous prime is 216223981. The next prime is 216224051. The reversal of 216224023 is 320422612.

216224023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216224023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216223985 and 216224003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216222023) 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, 39865 + ... + 44962.

It is an arithmetic number, because the mean of its divisors is an integer number (54077850).

Almost surely, 2^216224023 is an apocalyptic number.

216224023 is a deficient number, since it is larger than the sum of its proper divisors (87377).

216224023 is an equidigital number, since it uses as much as digits as its factorization.

216224023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87376.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 216224023 is about 14704.5578988285. The cubic root of 216224023 is about 600.2073570339.

Adding to 216224023 its reverse (320422612), we get a palindrome (536646635).

The spelling of 216224023 in words is "two hundred sixteen million, two hundred twenty-four thousand, twenty-three".