20320002223 has 4 divisors (see below), whose sum is σ = 20529486880. Its totient is φ = 20110517568.

The previous prime is 20320002193. The next prime is 20320002229. The reversal of 20320002223 is 32220002302.

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 20320002223 - 2⁹ = 20320001711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20320002197 and 20320002206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320002229) 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, 104742183 + ... + 104742376.

It is an arithmetic number, because the mean of its divisors is an integer number (5132371720).

Almost surely, 2^20320002223 is an apocalyptic number.

20320002223 is a deficient number, since it is larger than the sum of its proper divisors (209484657).

20320002223 is an equidigital number, since it uses as much as digits as its factorization.

20320002223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209484656.

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 20320002223 its reverse (32220002302), we get a palindrome (52540004525).

The spelling of 20320002223 in words is "twenty billion, three hundred twenty million, two thousand, two hundred twenty-three".