323230021 has 8 divisors (see below), whose sum is σ = 325841400. Its totient is φ = 320624832.

The previous prime is 323230013. The next prime is 323230049. The reversal of 323230021 is 120032323.

It can be written as a sum of positive squares in 4 ways, for example, as 133864900 + 189365121 = 11570^2 + 13761^2 .

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 323230021 - 2³ = 323230013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 323229977 and 323230004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323230051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215751 + ... + 217243.

It is an arithmetic number, because the mean of its divisors is an integer number (40730175).

Almost surely, 2^323230021 is an apocalyptic number.

It is an amenable number.

323230021 is a deficient number, since it is larger than the sum of its proper divisors (2611379).

323230021 is a wasteful number, since it uses less digits than its factorization.

323230021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 323230021 is about 17978.5989721113. The cubic root of 323230021 is about 686.2840362326.

Adding to 323230021 its reverse (120032323), we get a palindrome (443262344).

The spelling of 323230021 in words is "three hundred twenty-three million, two hundred thirty thousand, twenty-one".