112111311131 has 4 divisors (see below), whose sum is σ = 112112012664. Its totient is φ = 112110609600.

The previous prime is 112111311107. The next prime is 112111311139. The reversal of 112111311131 is 131113111211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 131113111211 = 53 ⋅2473832287.

It is a cyclic number.

It is not a de Polignac number, because 112111311131 - 2¹⁰ = 112111310107 is a prime.

It is a super-2 number, since 2×112111311131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112111311139) 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 3 ways as a sum of consecutive naturals, for example, 18596 + ... + 473886.

It is an arithmetic number, because the mean of its divisors is an integer number (28028003166).

Almost surely, 2^112111311131 is an apocalyptic number.

112111311131 is a deficient number, since it is larger than the sum of its proper divisors (701533).

112111311131 is an equidigital number, since it uses as much as digits as its factorization.

112111311131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701532.

The product of its digits is 18, while the sum is 17.

Adding to 112111311131 its reverse (131113111211), we get a palindrome (243224422342).

The spelling of 112111311131 in words is "one hundred twelve billion, one hundred eleven million, three hundred eleven thousand, one hundred thirty-one".