22231243 has 4 divisors (see below), whose sum is σ = 22391320. Its totient is φ = 22071168.

The previous prime is 22231241. The next prime is 22231331. The reversal of 22231243 is 34213222.

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 22231243 - 2¹ = 22231241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22231243.

It is not an unprimeable number, because it can be changed into a prime (22231241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79830 + ... + 80107.

It is an arithmetic number, because the mean of its divisors is an integer number (5597830).

Almost surely, 2^22231243 is an apocalyptic number.

22231243 is a deficient number, since it is larger than the sum of its proper divisors (160077).

22231243 is a wasteful number, since it uses less digits than its factorization.

22231243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160076.

The product of its digits is 576, while the sum is 19.

The square root of 22231243 is about 4715.0019088013. The cubic root of 22231243 is about 281.1822587141.

Adding to 22231243 its reverse (34213222), we get a palindrome (56444465).

The spelling of 22231243 in words is "twenty-two million, two hundred thirty-one thousand, two hundred forty-three".