111131230311 has 16 divisors (see below), whose sum is σ = 166268951520. Its totient is φ = 73353945600.

The previous prime is 111131230291. The next prime is 111131230319. The reversal of 111131230311 is 113032131111.

111131230311 is a `hidden beast` number, since 1 + 1 + 11 + 312 + 30 + 311 = 666.

It is not a de Polignac number, because 111131230311 - 2¹⁸ = 111130968167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111131230319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20373370 + ... + 20378823.

It is an arithmetic number, because the mean of its divisors is an integer number (10391809470).

Almost surely, 2^111131230311 is an apocalyptic number.

111131230311 is a deficient number, since it is larger than the sum of its proper divisors (55137721209).

111131230311 is a wasteful number, since it uses less digits than its factorization.

111131230311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40752303 (or 40752297 counting only the distinct ones).

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

Adding to 111131230311 its reverse (113032131111), we get a palindrome (224163361422).

The spelling of 111131230311 in words is "one hundred eleven billion, one hundred thirty-one million, two hundred thirty thousand, three hundred eleven".