163230321 has 8 divisors (see below), whose sum is σ = 217867104. Its totient is φ = 108706880.

The previous prime is 163230317. The next prime is 163230337. The reversal of 163230321 is 123032361.

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

It is a cyclic number.

It is not a de Polignac number, because 163230321 - 2² = 163230317 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (163230391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24915 + ... + 30776.

It is an arithmetic number, because the mean of its divisors is an integer number (27233388).

Almost surely, 2^163230321 is an apocalyptic number.

It is an amenable number.

163230321 is a deficient number, since it is larger than the sum of its proper divisors (54636783).

163230321 is an equidigital number, since it uses as much as digits as its factorization.

163230321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56671.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 163230321 is about 12776.1622171918. The cubic root of 163230321 is about 546.5127246408.

Adding to 163230321 its reverse (123032361), we get a palindrome (286262682).

The spelling of 163230321 in words is "one hundred sixty-three million, two hundred thirty thousand, three hundred twenty-one".