113444181 has 6 divisors (see below), whose sum is σ = 163863830. Its totient is φ = 75629448.

The previous prime is 113444161. The next prime is 113444189. The reversal of 113444181 is 181444311.

It can be written as a sum of positive squares in only one way, i.e., 109307025 + 4137156 = 10455^2 + 2034^2 .

It is a de Polignac number, because none of the positive numbers 2^k-113444181 is a prime.

It is a super-2 number, since 2×113444181² = 25739164405521522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113444189) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6302446 + ... + 6302463.

Almost surely, 2^113444181 is an apocalyptic number.

It is an amenable number.

113444181 is a deficient number, since it is larger than the sum of its proper divisors (50419649).

113444181 is a wasteful number, since it uses less digits than its factorization.

113444181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12604915 (or 12604912 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 113444181 is about 10651.0178386857. The cubic root of 113444181 is about 484.0914453379.

Adding to 113444181 its reverse (181444311), we get a palindrome (294888492).

The spelling of 113444181 in words is "one hundred thirteen million, four hundred forty-four thousand, one hundred eighty-one".