211431243111 has 32 divisors (see below), whose sum is σ = 317850531840. Its totient is φ = 123852825600.

The previous prime is 211431243103. The next prime is 211431243137. The reversal of 211431243111 is 111342134112.

It is not a de Polignac number, because 211431243111 - 2³ = 211431243103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211431243161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 699871 + ... + 955343.

It is an arithmetic number, because the mean of its divisors is an integer number (9932829120).

Almost surely, 2^211431243111 is an apocalyptic number.

211431243111 is a deficient number, since it is larger than the sum of its proper divisors (106419288729).

211431243111 is a wasteful number, since it uses less digits than its factorization.

211431243111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256327.

The product of its digits is 576, while the sum is 24.

Adding to 211431243111 its reverse (111342134112), we get a palindrome (322773377223).

The spelling of 211431243111 in words is "two hundred eleven billion, four hundred thirty-one million, two hundred forty-three thousand, one hundred eleven".