16232213 has 4 divisors (see below), whose sum is σ = 17086560. Its totient is φ = 15377868.

The previous prime is 16232201. The next prime is 16232219. The reversal of 16232213 is 31223261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16232213 - 2⁶ = 16232149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16232219) 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, 427145 + ... + 427182.

It is an arithmetic number, because the mean of its divisors is an integer number (4271640).

Almost surely, 2^16232213 is an apocalyptic number.

It is an amenable number.

16232213 is a deficient number, since it is larger than the sum of its proper divisors (854347).

16232213 is an equidigital number, since it uses as much as digits as its factorization.

16232213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854346.

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

The square root of 16232213 is about 4028.9220642748. The cubic root of 16232213 is about 253.1974014909.

Adding to 16232213 its reverse (31223261), we get a palindrome (47455474).

The spelling of 16232213 in words is "sixteen million, two hundred thirty-two thousand, two hundred thirteen".