2173231 has 8 divisors (see below), whose sum is σ = 2268720. Its totient is φ = 2079168.

The previous prime is 2173219. The next prime is 2173243. The reversal of 2173231 is 1323712.

It is an interprime number because it is at equal distance from previous prime (2173219) and next prime (2173243).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2173231 - 2¹³ = 2165039 is a prime.

It is a super-2 number, since 2×2173231² = 9445865958722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2173199 and 2173208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3700 + ... + 4246.

It is an arithmetic number, because the mean of its divisors is an integer number (283590).

2^2173231 is an apocalyptic number.

2173231 is a deficient number, since it is larger than the sum of its proper divisors (95489).

2173231 is a wasteful number, since it uses less digits than its factorization.

2173231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713.

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

The square root of 2173231 is about 1474.1882512081. The cubic root of 2173231 is about 129.5294825118.

Adding to 2173231 its reverse (1323712), we get a palindrome (3496943).

The spelling of 2173231 in words is "two million, one hundred seventy-three thousand, two hundred thirty-one".