20320204023 has 32 divisors (see below), whose sum is σ = 36428382720. Its totient is φ = 10928511360.

The previous prime is 20320204019. The next prime is 20320204027. The reversal of 20320204023 is 32040202302.

It is an interprime number because it is at equal distance from previous prime (20320204019) and next prime (20320204027).

It is not a de Polignac number, because 20320204023 - 2² = 20320204019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20320203987 and 20320204005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320204027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3158973 + ... + 3165398.

It is an arithmetic number, because the mean of its divisors is an integer number (1138386960).

Almost surely, 2^20320204023 is an apocalyptic number.

20320204023 is a deficient number, since it is larger than the sum of its proper divisors (16108178697).

20320204023 is a wasteful number, since it uses less digits than its factorization.

20320204023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6324404 (or 6324398 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 20320204023 its reverse (32040202302), we get a palindrome (52360406325).

The spelling of 20320204023 in words is "twenty billion, three hundred twenty million, two hundred four thousand, twenty-three".