16303213 has 4 divisors (see below), whose sum is σ = 16393468. Its totient is φ = 16212960.

The previous prime is 16303211. The next prime is 16303229. The reversal of 16303213 is 31230361.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1108809 + 15194404 = 1053^2 + 3898^2 .

It is a cyclic number.

It is not a de Polignac number, because 16303213 - 2¹ = 16303211 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 (16303211) 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, 44856 + ... + 45217.

It is an arithmetic number, because the mean of its divisors is an integer number (4098367).

Almost surely, 2^16303213 is an apocalyptic number.

It is an amenable number.

16303213 is a deficient number, since it is larger than the sum of its proper divisors (90255).

16303213 is an equidigital number, since it uses as much as digits as its factorization.

16303213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90254.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 16303213 is about 4037.7237399307. The cubic root of 16303213 is about 253.5660279255.

Adding to 16303213 its reverse (31230361), we get a palindrome (47533574).

The spelling of 16303213 in words is "sixteen million, three hundred three thousand, two hundred thirteen".