31234142111 has 4 divisors (see below), whose sum is σ = 32078308152. Its totient is φ = 30389976072.

The previous prime is 31234142089. The next prime is 31234142119. The reversal of 31234142111 is 11124143213.

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

It is a cyclic number.

It is not a de Polignac number, because 31234142111 - 2¹⁸ = 31233879967 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 (31234142119) 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, 422082965 + ... + 422083038.

It is an arithmetic number, because the mean of its divisors is an integer number (8019577038).

Almost surely, 2^31234142111 is an apocalyptic number.

31234142111 is a deficient number, since it is larger than the sum of its proper divisors (844166041).

31234142111 is an equidigital number, since it uses as much as digits as its factorization.

31234142111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844166040.

The product of its digits is 576, while the sum is 23.

Adding to 31234142111 its reverse (11124143213), we get a palindrome (42358285324).

The spelling of 31234142111 in words is "thirty-one billion, two hundred thirty-four million, one hundred forty-two thousand, one hundred eleven".