20111012323 has 16 divisors (see below), whose sum is σ = 21267997696. Its totient is φ = 18986879520.

The previous prime is 20111012309. The next prime is 20111012357. The reversal of 20111012323 is 32321011102.

It is a cyclic number.

It is not a de Polignac number, because 20111012323 - 2²⁵ = 20077457891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20111012297 and 20111012306.

It is not an unprimeable number, because it can be changed into a prime (20111012123) 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, 1160440 + ... + 1177642.

It is an arithmetic number, because the mean of its divisors is an integer number (1329249856).

Almost surely, 2^20111012323 is an apocalyptic number.

20111012323 is a deficient number, since it is larger than the sum of its proper divisors (1156985373).

20111012323 is a wasteful number, since it uses less digits than its factorization.

20111012323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18154.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20111012323 its reverse (32321011102), we get a palindrome (52432023425).

The spelling of 20111012323 in words is "twenty billion, one hundred eleven million, twelve thousand, three hundred twenty-three".