111031131321113 has 12 divisors (see below), whose sum is σ = 118019869866780. Its totient is φ = 104434940762112.

The previous prime is 111031131321101. The next prime is 111031131321137. The reversal of 111031131321113 is 311123131130111.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 52250879739529 + 58780251581584 = 7228477^2 + 7666828^2 .

It is not a de Polignac number, because 111031131321113 - 2¹⁰ = 111031131320089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111031131321013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118923056 + ... + 119853057.

It is an arithmetic number, because the mean of its divisors is an integer number (9834989155565).

Almost surely, 2^{111031131321113} is an apocalyptic number.

It is an amenable number.

111031131321113 is a deficient number, since it is larger than the sum of its proper divisors (6988738545667).

111031131321113 is a wasteful number, since it uses less digits than its factorization.

111031131321113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238777756 (or 238777739 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 23.

Adding to 111031131321113 its reverse (311123131130111), we get a palindrome (422154262451224).

The spelling of 111031131321113 in words is "one hundred eleven trillion, thirty-one billion, one hundred thirty-one million, three hundred twenty-one thousand, one hundred thirteen".