2163423 has 4 divisors (see below), whose sum is σ = 2884568. Its totient is φ = 1442280.

The previous prime is 2163409. The next prime is 2163431. The reversal of 2163423 is 3243612.

It is a happy number.

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

It is not a de Polignac number, because 2163423 - 2⁸ = 2163167 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 1 + 6² + 3¹⁰ + 4¹⁰ + 2¹⁹ + 3¹² .

It is a D-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 2163423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163443) 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, 360568 + ... + 360573.

It is an arithmetic number, because the mean of its divisors is an integer number (721142).

2^2163423 is an apocalyptic number.

2163423 is a deficient number, since it is larger than the sum of its proper divisors (721145).

2163423 is an equidigital number, since it uses as much as digits as its factorization.

2163423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721144.

The product of its digits is 864, while the sum is 21.

The square root of 2163423 is about 1470.8579129202. The cubic root of 2163423 is about 129.3343289740.

The spelling of 2163423 in words is "two million, one hundred sixty-three thousand, four hundred twenty-three".