20320203323 has 24 divisors (see below), whose sum is σ = 24761845152. Its totient is φ = 16594980864.

The previous prime is 20320203301. The next prime is 20320203359. The reversal of 20320203323 is 32330202302.

It is not a de Polignac number, because 20320203323 - 2²⁰ = 20319154747 is a prime.

It is a super-3 number, since 3×20320203323³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20320203295 and 20320203304.

It is not an unprimeable number, because it can be changed into a prime (20320203223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254561 + ... + 324717.

It is an arithmetic number, because the mean of its divisors is an integer number (1031743548).

Almost surely, 2^20320203323 is an apocalyptic number.

20320203323 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20320203323 is a deficient number, since it is larger than the sum of its proper divisors (4441641829).

20320203323 is a wasteful number, since it uses less digits than its factorization.

20320203323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70451 (or 70444 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 20.

Adding to 20320203323 its reverse (32330202302), we get a palindrome (52650405625).

The spelling of 20320203323 in words is "twenty billion, three hundred twenty million, two hundred three thousand, three hundred twenty-three".