2273181 has 4 divisors (see below), whose sum is σ = 3030912. Its totient is φ = 1515452.

The previous prime is 2273171. The next prime is 2273209. The reversal of 2273181 is 1813722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2273181 - 2¹¹ = 2271133 is a prime.

It is a super-2 number, since 2×2273181² = 10334703717522, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2273101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378861 + ... + 378866.

It is an arithmetic number, because the mean of its divisors is an integer number (757728).

2^2273181 is an apocalyptic number.

It is an amenable number.

2273181 is a deficient number, since it is larger than the sum of its proper divisors (757731).

2273181 is an equidigital number, since it uses as much as digits as its factorization.

2273181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757730.

The product of its digits is 672, while the sum is 24.

The square root of 2273181 is about 1507.7071996910. The cubic root of 2273181 is about 131.4855434767.

The spelling of 2273181 in words is "two million, two hundred seventy-three thousand, one hundred eighty-one".