16345223 has 4 divisors (see below), whose sum is σ = 16353360. Its totient is φ = 16337088.

The previous prime is 16345171. The next prime is 16345229. The reversal of 16345223 is 32254361.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16345223 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 16345192 and 16345201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16345229) 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 in 3 ways as a sum of consecutive naturals, for example, 1358 + ... + 5876.

It is an arithmetic number, because the mean of its divisors is an integer number (4088340).

Almost surely, 2^16345223 is an apocalyptic number.

16345223 is a deficient number, since it is larger than the sum of its proper divisors (8137).

16345223 is an equidigital number, since it uses as much as digits as its factorization.

16345223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8136.

The product of its digits is 4320, while the sum is 26.

The square root of 16345223 is about 4042.9225814997. The cubic root of 16345223 is about 253.7836368167.

Adding to 16345223 its reverse (32254361), we get a palindrome (48599584).

The spelling of 16345223 in words is "sixteen million, three hundred forty-five thousand, two hundred twenty-three".