2173423 has 4 divisors (see below), whose sum is σ = 2483920. Its totient is φ = 1862928.

The previous prime is 2173411. The next prime is 2173447. The reversal of 2173423 is 3243712.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2173423 - 2¹³ = 2165231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2173394 and 2173403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173453) 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, 155238 + ... + 155251.

It is an arithmetic number, because the mean of its divisors is an integer number (620980).

2^2173423 is an apocalyptic number.

2173423 is a deficient number, since it is larger than the sum of its proper divisors (310497).

2173423 is an equidigital number, since it uses as much as digits as its factorization.

2173423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310496.

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

The square root of 2173423 is about 1474.2533703540. The cubic root of 2173423 is about 129.5332969443.

The spelling of 2173423 in words is "two million, one hundred seventy-three thousand, four hundred twenty-three".