111312234342 has 64 divisors (see below), whose sum is σ = 254801327040. Its totient is φ = 35993922048.

The previous prime is 111312234259. The next prime is 111312234343. The reversal of 111312234342 is 243432213111.

111312234342 is a `hidden beast` number, since 1 + 1 + 1 + 3 + 1 + 223 + 434 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111312234343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 590668 + ... + 755984.

It is an arithmetic number, because the mean of its divisors is an integer number (3981270735).

Almost surely, 2^111312234342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111312234342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127400663520).

111312234342 is an abundant number, since it is smaller than the sum of its proper divisors (143489092698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111312234342 is a wasteful number, since it uses less digits than its factorization.

111312234342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165702 (or 165696 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 111312234342 its reverse (243432213111), we get a palindrome (354744447453).

The spelling of 111312234342 in words is "one hundred eleven billion, three hundred twelve million, two hundred thirty-four thousand, three hundred forty-two".