20020323223 has 4 divisors (see below), whose sum is σ = 20021414728. Its totient is φ = 20019231720.

The previous prime is 20020323163. The next prime is 20020323233. The reversal of 20020323223 is 32232302002.

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 20020323223 - 2³³ = 11430388631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20020323223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020323233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517761 + ... + 555082.

It is an arithmetic number, because the mean of its divisors is an integer number (5005353682).

Almost surely, 2^20020323223 is an apocalyptic number.

20020323223 is a deficient number, since it is larger than the sum of its proper divisors (1091505).

20020323223 is a wasteful number, since it uses less digits than its factorization.

20020323223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091504.

The product of its (nonzero) digits is 864, while the sum is 19.

Adding to 20020323223 its reverse (32232302002), we get a palindrome (52252625225).

The spelling of 20020323223 in words is "twenty billion, twenty million, three hundred twenty-three thousand, two hundred twenty-three".