20323404111 has 16 divisors (see below), whose sum is σ = 28014399488. Its totient is φ = 13091997600.

The previous prime is 20323404097. The next prime is 20323404119. The reversal of 20323404111 is 11140432302.

It is not a de Polignac number, because 20323404111 - 2¹³ = 20323395919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323404119) 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, 103831 + ... + 226776.

It is an arithmetic number, because the mean of its divisors is an integer number (1750899968).

Almost surely, 2^20323404111 is an apocalyptic number.

20323404111 is a deficient number, since it is larger than the sum of its proper divisors (7690995377).

20323404111 is a wasteful number, since it uses less digits than its factorization.

20323404111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331302.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20323404111 its reverse (11140432302), we get a palindrome (31463836413).

The spelling of 20323404111 in words is "twenty billion, three hundred twenty-three million, four hundred four thousand, one hundred eleven".