20423031102111 has 32 divisors (see below), whose sum is σ = 30850757296128. Its totient is φ = 11909299580640.

The previous prime is 20423031102101. The next prime is 20423031102151. The reversal of 20423031102111 is 11120113032402.

It is not a de Polignac number, because 20423031102111 - 2²³ = 20423022713503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423031102101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107312031 + ... + 107502176.

It is an arithmetic number, because the mean of its divisors is an integer number (964086165504).

Almost surely, 2^{20423031102111} is an apocalyptic number.

20423031102111 is a deficient number, since it is larger than the sum of its proper divisors (10427726194017).

20423031102111 is a wasteful number, since it uses less digits than its factorization.

20423031102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214814331.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20423031102111 its reverse (11120113032402), we get a palindrome (31543144134513).

The spelling of 20423031102111 in words is "twenty trillion, four hundred twenty-three billion, thirty-one million, one hundred two thousand, one hundred eleven".