113809505 has 8 divisors (see below), whose sum is σ = 137018112. Its totient is φ = 90749808.

The previous prime is 113809439. The next prime is 113809523. The reversal of 113809505 is 505908311.

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 113809505 - 2¹² = 113805409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35537 + ... + 38606.

It is an arithmetic number, because the mean of its divisors is an integer number (17127264).

Almost surely, 2^113809505 is an apocalyptic number.

It is an amenable number.

113809505 is a deficient number, since it is larger than the sum of its proper divisors (23208607).

113809505 is an equidigital number, since it uses as much as digits as its factorization.

113809505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74455.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 113809505 is about 10668.1537765445. The cubic root of 113809505 is about 484.6105280085.

The spelling of 113809505 in words is "one hundred thirteen million, eight hundred nine thousand, five hundred five".