20323321 has 8 divisors (see below), whose sum is σ = 21189888. Its totient is φ = 19470000.

The previous prime is 20323291. The next prime is 20323333. The reversal of 20323321 is 12332302.

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 20323321 - 2¹³ = 20315129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20323295 and 20323304.

It is not an unprimeable number, because it can be changed into a prime (20323351) 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, 115 + ... + 6376.

It is an arithmetic number, because the mean of its divisors is an integer number (2648736).

Almost surely, 2^20323321 is an apocalyptic number.

It is an amenable number.

20323321 is a deficient number, since it is larger than the sum of its proper divisors (866567).

20323321 is a wasteful number, since it uses less digits than its factorization.

20323321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6623.

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

The square root of 20323321 is about 4508.1394166552. The cubic root of 20323321 is about 272.8966632918.

Adding to 20323321 its reverse (12332302), we get a palindrome (32655623).

The spelling of 20323321 in words is "twenty million, three hundred twenty-three thousand, three hundred twenty-one".