16213223 has 8 divisors (see below), whose sum is σ = 18487728. Its totient is φ = 14085504.

The previous prime is 16213207. The next prime is 16213247. The reversal of 16213223 is 32231261.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16213223 - 2⁴ = 16213207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16213195 and 16213204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16213273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36461 + ... + 36902.

It is an arithmetic number, because the mean of its divisors is an integer number (2310966).

It is a self-describing number.

Almost surely, 2^16213223 is an apocalyptic number.

16213223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16213223 is a deficient number, since it is larger than the sum of its proper divisors (2274505).

16213223 is a wasteful number, since it uses less digits than its factorization.

16213223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73393.

The product of its digits is 432, while the sum is 20.

The square root of 16213223 is about 4026.5646648229. The cubic root of 16213223 is about 253.0986247578.

Adding to 16213223 its reverse (32231261), we get a palindrome (48444484).

The spelling of 16213223 in words is "sixteen million, two hundred thirteen thousand, two hundred twenty-three".