20320310223 has 6 divisors (see below), whose sum is σ = 29351559224. Its totient is φ = 13546873476.

The previous prime is 20320310207. The next prime is 20320310233. The reversal of 20320310223 is 32201302302.

It is a happy number.

It is not a de Polignac number, because 20320310223 - 2⁴ = 20320310207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20320310196 and 20320310205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320310203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1128906115 + ... + 1128906132.

Almost surely, 2^20320310223 is an apocalyptic number.

20320310223 is a deficient number, since it is larger than the sum of its proper divisors (9031249001).

20320310223 is a wasteful number, since it uses less digits than its factorization.

20320310223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257812253 (or 2257812250 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20320310223 its reverse (32201302302), we get a palindrome (52521612525).

The spelling of 20320310223 in words is "twenty billion, three hundred twenty million, three hundred ten thousand, two hundred twenty-three".