20330311223 has 4 divisors (see below), whose sum is σ = 20395264608. Its totient is φ = 20265357840.

The previous prime is 20330311193. The next prime is 20330311229. The reversal of 20330311223 is 32211303302.

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 20330311223 - 2³⁰ = 19256569399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20330311195 and 20330311204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330311229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32476223 + ... + 32476848.

It is an arithmetic number, because the mean of its divisors is an integer number (5098816152).

Almost surely, 2^20330311223 is an apocalyptic number.

20330311223 is a deficient number, since it is larger than the sum of its proper divisors (64953385).

20330311223 is an equidigital number, since it uses as much as digits as its factorization.

20330311223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64953384.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20330311223 its reverse (32211303302), we get a palindrome (52541614525).

The spelling of 20330311223 in words is "twenty billion, three hundred thirty million, three hundred eleven thousand, two hundred twenty-three".