112681 has 4 divisors (see below), whose sum is σ = 113364. Its totient is φ = 112000.

The previous prime is 112663. The next prime is 112687. The reversal of 112681 is 186211.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 99225 + 13456 = 315^2 + 116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112681 is a prime.

It is a super-2 number, since 2×112681² = 25394015522, which contains 22 as substring.

It is a Duffinian number.

112681 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81 + ... + 481.

It is an arithmetic number, because the mean of its divisors is an integer number (28341).

2¹¹²⁶⁸¹ is an apocalyptic number.

It is an amenable number.

112681 is a deficient number, since it is larger than the sum of its proper divisors (683).

112681 is an equidigital number, since it uses as much as digits as its factorization.

112681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682.

The product of its digits is 96, while the sum is 19.

The square root of 112681 is about 335.6799070543. The cubic root of 112681 is about 48.3003447773.

Adding to 112681 its reverse (186211), we get a palindrome (298892).

The spelling of 112681 in words is "one hundred twelve thousand, six hundred eighty-one".