111131311302 has 96 divisors (see below), whose sum is σ = 265617615744. Its totient is φ = 33299942400.

The previous prime is 111131311259. The next prime is 111131311309. The reversal of 111131311302 is 203113131111.

111131311302 is a `hidden beast` number, since 11 + 11 + 31 + 311 + 302 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111131311309) 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 47 ways as a sum of consecutive naturals, for example, 12219777 + ... + 12228867.

It is an arithmetic number, because the mean of its divisors is an integer number (2766850164).

Almost surely, 2^111131311302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111131311302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132808807872).

111131311302 is an abundant number, since it is smaller than the sum of its proper divisors (154486304442).

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

111131311302 is a wasteful number, since it uses less digits than its factorization.

111131311302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9794 (or 9791 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 111131311302 its reverse (203113131111), we get a palindrome (314244442413).

The spelling of 111131311302 in words is "one hundred eleven billion, one hundred thirty-one million, three hundred eleven thousand, three hundred two".