20431114311 has 4 divisors (see below), whose sum is σ = 27241485752. Its totient is φ = 13620742872.

The previous prime is 20431114289. The next prime is 20431114321. The reversal of 20431114311 is 11341113402.

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

It is not a de Polignac number, because 20431114311 - 2¹¹ = 20431112263 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 (20431114321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3405185716 + ... + 3405185721.

It is an arithmetic number, because the mean of its divisors is an integer number (6810371438).

Almost surely, 2^20431114311 is an apocalyptic number.

20431114311 is a deficient number, since it is larger than the sum of its proper divisors (6810371441).

20431114311 is an equidigital number, since it uses as much as digits as its factorization.

20431114311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6810371440.

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

Adding to 20431114311 its reverse (11341113402), we get a palindrome (31772227713).

Subtracting from 20431114311 its reverse (11341113402), we obtain a palindrome (9090000909).

The spelling of 20431114311 in words is "twenty billion, four hundred thirty-one million, one hundred fourteen thousand, three hundred eleven".