2179231 has 4 divisors (see below), whose sum is σ = 2182264. Its totient is φ = 2176200.

The previous prime is 2179223. The next prime is 2179241. The reversal of 2179231 is 1329712.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2179231 - 2³ = 2179223 is a prime.

It is a super-2 number, since 2×2179231² = 9498095502722, 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 = 2179196 and 2179205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2179211) 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, 241 + ... + 2101.

It is an arithmetic number, because the mean of its divisors is an integer number (545566).

2^2179231 is an apocalyptic number.

2179231 is a deficient number, since it is larger than the sum of its proper divisors (3033).

2179231 is a wasteful number, since it uses less digits than its factorization.

2179231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3032.

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

The square root of 2179231 is about 1476.2218667937. The cubic root of 2179231 is about 129.6485775004.

The spelling of 2179231 in words is "two million, one hundred seventy-nine thousand, two hundred thirty-one".