20431214111 has 16 divisors (see below), whose sum is σ = 26580192768. Its totient is φ = 15228232800.

The previous prime is 20431214087. The next prime is 20431214123. The reversal of 20431214111 is 11141213402.

It is not a de Polignac number, because 20431214111 - 2⁶ = 20431214047 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 (20431214131) 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, 5766500 + ... + 5770041.

It is an arithmetic number, because the mean of its divisors is an integer number (1661262048).

Almost surely, 2^20431214111 is an apocalyptic number.

20431214111 is a deficient number, since it is larger than the sum of its proper divisors (6148978657).

20431214111 is a wasteful number, since it uses less digits than its factorization.

20431214111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11536582.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 20431214111 its reverse (11141213402), we get a palindrome (31572427513).

The spelling of 20431214111 in words is "twenty billion, four hundred thirty-one million, two hundred fourteen thousand, one hundred eleven".