2171323 has 16 divisors (see below), whose sum is σ = 2739456. Its totient is φ = 1671840.

The previous prime is 2171311. The next prime is 2171329. The reversal of 2171323 is 3231712.

It is a cyclic number.

It is not a de Polignac number, because 2171323 - 2¹⁷ = 2040251 is a prime.

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 2171323.

It is not an unprimeable number, because it can be changed into a prime (2171329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12465 + ... + 12637.

It is an arithmetic number, because the mean of its divisors is an integer number (171216).

2^2171323 is an apocalyptic number.

2171323 is a deficient number, since it is larger than the sum of its proper divisors (568133).

2171323 is a wasteful number, since it uses less digits than its factorization.

2171323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354.

The product of its digits is 252, while the sum is 19.

The square root of 2171323 is about 1473.5409733021. The cubic root of 2171323 is about 129.4915643745.

It can be divided in two parts, 21713 and 23, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 2171323 in words is "two million, one hundred seventy-one thousand, three hundred twenty-three".