2173243 has 2 divisors, whose sum is σ = 2173244. Its totient is φ = 2173242.

The previous prime is 2173219. The next prime is 2173307. The reversal of 2173243 is 3423712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2173243 - 2¹⁷ = 2042171 is a prime.

It is not a weakly prime, because it can be changed into another prime (2173043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086621 + 1086622.

It is an arithmetic number, because the mean of its divisors is an integer number (1086622).

2^2173243 is an apocalyptic number.

2173243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2173243 is an equidigital number, since it uses as much as digits as its factorization.

2173243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 22.

The square root of 2173243 is about 1474.1923212390. The cubic root of 2173243 is about 129.5297209205.

Adding to 2173243 its reverse (3423712), we get a palindrome (5596955).

The spelling of 2173243 in words is "two million, one hundred seventy-three thousand, two hundred forty-three".