2271231 has 6 divisors (see below), whose sum is σ = 3280680. Its totient is φ = 1514148.

The previous prime is 2271229. The next prime is 2271239. The reversal of 2271231 is 1321722.

It is not a de Polignac number, because 2271231 - 2¹ = 2271229 is a prime.

It is a super-2 number, since 2×2271231² = 10316980510722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2271239) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126171 + ... + 126188.

It is an arithmetic number, because the mean of its divisors is an integer number (546780).

2^2271231 is an apocalyptic number.

2271231 is a deficient number, since it is larger than the sum of its proper divisors (1009449).

2271231 is a wasteful number, since it uses less digits than its factorization.

2271231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252365 (or 252362 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 2271231 is about 1507.0603836609. The cubic root of 2271231 is about 131.4479353614.

Adding to 2271231 its reverse (1321722), we get a palindrome (3592953).

It can be divided in two parts, 22 and 71231, that added together give a triangular number (71253 = T₃₇₇).

The spelling of 2271231 in words is "two million, two hundred seventy-one thousand, two hundred thirty-one".