16230321 has 16 divisors (see below), whose sum is σ = 24148800. Its totient is φ = 10773504.

The previous prime is 16230317. The next prime is 16230323. The reversal of 16230321 is 12303261.

It is not a de Polignac number, because 16230321 - 2² = 16230317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16230294 and 16230303.

It is not an unprimeable number, because it can be changed into a prime (16230323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5770 + ... + 8108.

It is an arithmetic number, because the mean of its divisors is an integer number (1509300).

Almost surely, 2^16230321 is an apocalyptic number.

It is an amenable number.

16230321 is a deficient number, since it is larger than the sum of its proper divisors (7918479).

16230321 is a wasteful number, since it uses less digits than its factorization.

16230321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605 (or 2599 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 16230321 is about 4028.6872551738. The cubic root of 16230321 is about 253.1875636847.

Adding to 16230321 its reverse (12303261), we get a palindrome (28533582).

The spelling of 16230321 in words is "sixteen million, two hundred thirty thousand, three hundred twenty-one".