112309681 has 4 divisors (see below), whose sum is σ = 122519664. Its totient is φ = 102099700.

The previous prime is 112309609. The next prime is 112309727. The reversal of 112309681 is 186903211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 186903211 = 11 ⋅16991201.

It is a cyclic number.

It is not a de Polignac number, because 112309681 - 2²³ = 103921073 is a prime.

It is a super-2 number, since 2×112309681² = 25226928892643522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112339681) 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, 5104975 + ... + 5104996.

It is an arithmetic number, because the mean of its divisors is an integer number (30629916).

Almost surely, 2^112309681 is an apocalyptic number.

112309681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112309681 is a deficient number, since it is larger than the sum of its proper divisors (10209983).

112309681 is a wasteful number, since it uses less digits than its factorization.

112309681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10209982.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 112309681 is about 10597.6261964649. The cubic root of 112309681 is about 482.4723149838.

The spelling of 112309681 in words is "one hundred twelve million, three hundred nine thousand, six hundred eighty-one".