20323111323 has 16 divisors (see below), whose sum is σ = 27983629856. Its totient is φ = 13109713920.

The previous prime is 20323111307. The next prime is 20323111349. The reversal of 20323111323 is 32311132302.

It is not a de Polignac number, because 20323111323 - 2⁴ = 20323111307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20323111323.

It is not an unprimeable number, because it can be changed into a prime (20323191323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 485686 + ... + 525867.

It is an arithmetic number, because the mean of its divisors is an integer number (1748976866).

Almost surely, 2^20323111323 is an apocalyptic number.

20323111323 is a deficient number, since it is larger than the sum of its proper divisors (7660518533).

20323111323 is a wasteful number, since it uses less digits than its factorization.

20323111323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011774.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20323111323 its reverse (32311132302), we get a palindrome (52634243625).

The spelling of 20323111323 in words is "twenty billion, three hundred twenty-three million, one hundred eleven thousand, three hundred twenty-three".