20332431111 has 4 divisors (see below), whose sum is σ = 27109908152. Its totient is φ = 13554954072.

The previous prime is 20332431109. The next prime is 20332431121. The reversal of 20332431111 is 11113423302.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20332431111 - 2¹ = 20332431109 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 (20332431101) 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, 3388738516 + ... + 3388738521.

It is an arithmetic number, because the mean of its divisors is an integer number (6777477038).

Almost surely, 2^20332431111 is an apocalyptic number.

20332431111 is a deficient number, since it is larger than the sum of its proper divisors (6777477041).

20332431111 is an equidigital number, since it uses as much as digits as its factorization.

20332431111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6777477040.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20332431111 its reverse (11113423302), we get a palindrome (31445854413).

The spelling of 20332431111 in words is "twenty billion, three hundred thirty-two million, four hundred thirty-one thousand, one hundred eleven".