20320011323 has 4 divisors (see below), whose sum is σ = 20351418480. Its totient is φ = 20288604168.

The previous prime is 20320011269. The next prime is 20320011359. The reversal of 20320011323 is 32311002302.

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 20320011323 - 2⁶ = 20320011259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20320011823) 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, 15702608 + ... + 15703901.

It is an arithmetic number, because the mean of its divisors is an integer number (5087854620).

Almost surely, 2^20320011323 is an apocalyptic number.

20320011323 is a deficient number, since it is larger than the sum of its proper divisors (31407157).

20320011323 is an equidigital number, since it uses as much as digits as its factorization.

20320011323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31407156.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20320011323 its reverse (32311002302), we get a palindrome (52631013625).

The spelling of 20320011323 in words is "twenty billion, three hundred twenty million, eleven thousand, three hundred twenty-three".