2231243 has 4 divisors (see below), whose sum is σ = 2550000. Its totient is φ = 1912488.

The previous prime is 2231219. The next prime is 2231269. The reversal of 2231243 is 3421322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3421322 = 2 ⋅1710661.

It is a cyclic number.

It is not a de Polignac number, because 2231243 - 2¹⁰ = 2230219 is a prime.

It is a super-3 number, since 3×2231243³ = 33324363847194917721, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2231293) 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, 159368 + ... + 159381.

It is an arithmetic number, because the mean of its divisors is an integer number (637500).

2^2231243 is an apocalyptic number.

2231243 is a deficient number, since it is larger than the sum of its proper divisors (318757).

2231243 is an equidigital number, since it uses as much as digits as its factorization.

2231243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318756.

The product of its digits is 288, while the sum is 17.

The square root of 2231243 is about 1493.7345815104. The cubic root of 2231243 is about 130.6719254038.

Adding to 2231243 its reverse (3421322), we get a palindrome (5652565).

The spelling of 2231243 in words is "two million, two hundred thirty-one thousand, two hundred forty-three".