112509817 has 8 divisors (see below), whose sum is σ = 130502336. Its totient is φ = 94997232.

The previous prime is 112509779. The next prime is 112509823. The reversal of 112509817 is 718905211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 112509817 - 2¹⁹ = 111985529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112509857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119478 + ... + 120415.

It is an arithmetic number, because the mean of its divisors is an integer number (16312792).

Almost surely, 2^112509817 is an apocalyptic number.

It is an amenable number.

112509817 is a deficient number, since it is larger than the sum of its proper divisors (17992519).

112509817 is an equidigital number, since it uses as much as digits as its factorization.

112509817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239967.

The product of its (nonzero) digits is 5040, while the sum is 34.

The square root of 112509817 is about 10607.0644855210. The cubic root of 112509817 is about 482.7587336859.

The spelling of 112509817 in words is "one hundred twelve million, five hundred nine thousand, eight hundred seventeen".