2183381 has 4 divisors (see below), whose sum is σ = 2258700. Its totient is φ = 2108064.

The previous prime is 2183371. The next prime is 2183383. The reversal of 2183381 is 1833812.

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 872356 + 1311025 = 934^2 + 1145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2183381 is a prime.

It is a super-2 number, since 2×2183381² = 9534305182322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2183381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2183383) 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, 37616 + ... + 37673.

It is an arithmetic number, because the mean of its divisors is an integer number (564675).

2^2183381 is an apocalyptic number.

It is an amenable number.

2183381 is a deficient number, since it is larger than the sum of its proper divisors (75319).

2183381 is an equidigital number, since it uses as much as digits as its factorization.

2183381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75318.

The product of its digits is 1152, while the sum is 26.

The square root of 2183381 is about 1477.6268135087. The cubic root of 2183381 is about 129.7308237024.

The spelling of 2183381 in words is "two million, one hundred eighty-three thousand, three hundred eighty-one".