2228231 has 4 divisors (see below), whose sum is σ = 2232264. Its totient is φ = 2224200.

The previous prime is 2228221. The next prime is 2228243. The reversal of 2228231 is 1328222.

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 2228231 - 2⁶ = 2228167 is a prime.

It is a super-2 number, since 2×2228231² = 9930026778722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1025 + ... + 2346.

It is an arithmetic number, because the mean of its divisors is an integer number (558066).

2^2228231 is an apocalyptic number.

2228231 is a deficient number, since it is larger than the sum of its proper divisors (4033).

2228231 is an equidigital number, since it uses as much as digits as its factorization.

2228231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4032.

The product of its digits is 384, while the sum is 20.

The square root of 2228231 is about 1492.7260297858. The cubic root of 2228231 is about 130.6131000354.

Subtracting from 2228231 its reverse (1328222), we obtain a palindrome (900009).

The spelling of 2228231 in words is "two million, two hundred twenty-eight thousand, two hundred thirty-one".