20330223 has 4 divisors (see below), whose sum is σ = 27106968. Its totient is φ = 13553480.

The previous prime is 20330207. The next prime is 20330237. The reversal of 20330223 is 32203302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20330223 - 2⁴ = 20330207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3388368 + ... + 3388373.

It is an arithmetic number, because the mean of its divisors is an integer number (6776742).

Almost surely, 2^20330223 is an apocalyptic number.

20330223 is a deficient number, since it is larger than the sum of its proper divisors (6776745).

20330223 is an equidigital number, since it uses as much as digits as its factorization.

20330223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6776744.

The product of its (nonzero) digits is 216, while the sum is 15.

The square root of 20330223 is about 4508.9048559489. The cubic root of 20330223 is about 272.9275525936.

Adding to 20330223 its reverse (32203302), we get a palindrome (52533525).

The spelling of 20330223 in words is "twenty million, three hundred thirty thousand, two hundred twenty-three".