113185 has 4 divisors (see below), whose sum is σ = 135828. Its totient is φ = 90544.

The previous prime is 113177. The next prime is 113189. The reversal of 113185 is 581311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35344 + 77841 = 188^2 + 279^2 .

It is a cyclic number.

It is not a de Polignac number, because 113185 - 2³ = 113177 is a prime.

It is a Duffinian number.

113185 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (113189) 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, 11314 + ... + 11323.

It is an arithmetic number, because the mean of its divisors is an integer number (33957).

2¹¹³¹⁸⁵ is an apocalyptic number.

It is an amenable number.

113185 is a deficient number, since it is larger than the sum of its proper divisors (22643).

113185 is an equidigital number, since it uses as much as digits as its factorization.

113185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22642.

The product of its digits is 120, while the sum is 19.

The square root of 113185 is about 336.4297846505. The cubic root of 113185 is about 48.3722503317.

Adding to 113185 its reverse (581311), we get a palindrome (694496).

The spelling of 113185 in words is "one hundred thirteen thousand, one hundred eighty-five".