181043 has 4 divisors (see below), whose sum is σ = 182160. Its totient is φ = 179928.

The previous prime is 181039. The next prime is 181061. The reversal of 181043 is 340181.

It is a happy number.

181043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 340181 = 163 ⋅2087.

It is a cyclic number.

It is not a de Polignac number, because 181043 - 2² = 181039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (181003) 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, 263 + ... + 656.

It is an arithmetic number, because the mean of its divisors is an integer number (45540).

2¹⁸¹⁰⁴³ is an apocalyptic number.

181043 is a deficient number, since it is larger than the sum of its proper divisors (1117).

181043 is an equidigital number, since it uses as much as digits as its factorization.

181043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 181043 is about 425.4914805258. The cubic root of 181043 is about 56.5710073892.

The spelling of 181043 in words is "one hundred eighty-one thousand, forty-three".