11223431 has 4 divisors (see below), whose sum is σ = 11235000. Its totient is φ = 11211864.

The previous prime is 11223427. The next prime is 11223437. The reversal of 11223431 is 13432211.

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 11223431 - 2² = 11223427 is a prime.

It is a super-2 number, since 2×11223431² = 251930806823522, 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 (11223437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4181 + ... + 6318.

It is an arithmetic number, because the mean of its divisors is an integer number (2808750).

Almost surely, 2^11223431 is an apocalyptic number.

11223431 is a deficient number, since it is larger than the sum of its proper divisors (11569).

11223431 is a wasteful number, since it uses less digits than its factorization.

11223431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11568.

The product of its digits is 144, while the sum is 17.

The square root of 11223431 is about 3350.1389523421. The cubic root of 11223431 is about 223.8937035523.

Adding to 11223431 its reverse (13432211), we get a palindrome (24655642).

The spelling of 11223431 in words is "eleven million, two hundred twenty-three thousand, four hundred thirty-one".