2172319 has 4 divisors (see below), whose sum is σ = 2183544. Its totient is φ = 2161096.

The previous prime is 2172283. The next prime is 2172323. The reversal of 2172319 is 9132712.

2172319 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2172319 - 2²¹ = 75167 is a prime.

It is a super-2 number, since 2×2172319² = 9437939675522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2172293 and 2172302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5317 + ... + 5710.

It is an arithmetic number, because the mean of its divisors is an integer number (545886).

2^2172319 is an apocalyptic number.

2172319 is a deficient number, since it is larger than the sum of its proper divisors (11225).

2172319 is a wasteful number, since it uses less digits than its factorization.

2172319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11224.

The product of its digits is 756, while the sum is 25.

The square root of 2172319 is about 1473.8788959748. The cubic root of 2172319 is about 129.5113608892.

The spelling of 2172319 in words is "two million, one hundred seventy-two thousand, three hundred nineteen".