112243509 has 32 divisors (see below), whose sum is σ = 190644480. Its totient is φ = 63936000.

The previous prime is 112243499. The next prime is 112243531. The reversal of 112243509 is 905342211.

112243509 is a `hidden beast` number, since 112 + 2 + 43 + 509 = 666.

It is not a de Polignac number, because 112243509 - 2⁴ = 112243493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112243409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75049 + ... + 76529.

It is an arithmetic number, because the mean of its divisors is an integer number (5957640).

Almost surely, 2^112243509 is an apocalyptic number.

It is an amenable number.

112243509 is a deficient number, since it is larger than the sum of its proper divisors (78400971).

112243509 is a wasteful number, since it uses less digits than its factorization.

112243509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898 (or 1892 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 112243509 is about 10594.5037165504. The cubic root of 112243509 is about 482.3775400424.

The spelling of 112243509 in words is "one hundred twelve million, two hundred forty-three thousand, five hundred nine".