16331230321 has 8 divisors (see below), whose sum is σ = 18678553920. Its totient is φ = 13987479408.

The previous prime is 16331230301. The next prime is 16331230327. The reversal of 16331230321 is 12303213361.

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

It is not a de Polignac number, because 16331230321 - 2¹¹ = 16331228273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16331230327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 883366 + ... + 901663.

It is an arithmetic number, because the mean of its divisors is an integer number (2334819240).

Almost surely, 2^16331230321 is an apocalyptic number.

It is an amenable number.

16331230321 is a deficient number, since it is larger than the sum of its proper divisors (2347323599).

16331230321 is a wasteful number, since it uses less digits than its factorization.

16331230321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786343.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 16331230321 its reverse (12303213361), we get a palindrome (28634443682).

The spelling of 16331230321 in words is "sixteen billion, three hundred thirty-one million, two hundred thirty thousand, three hundred twenty-one".