11443231 has 4 divisors (see below), whose sum is σ = 11686752. Its totient is φ = 11199712.

The previous prime is 11443217. The next prime is 11443241. The reversal of 11443231 is 13234411.

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 11443231 - 2¹⁵ = 11410463 is a prime.

It is a super-2 number, since 2×11443231² = 261895071438722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11443199 and 11443208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11443241) 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, 121690 + ... + 121783.

It is an arithmetic number, because the mean of its divisors is an integer number (2921688).

Almost surely, 2^11443231 is an apocalyptic number.

11443231 is a deficient number, since it is larger than the sum of its proper divisors (243521).

11443231 is an equidigital number, since it uses as much as digits as its factorization.

11443231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243520.

The product of its digits is 288, while the sum is 19.

The square root of 11443231 is about 3382.7845039257. The cubic root of 11443231 is about 225.3458450876.

Adding to 11443231 its reverse (13234411), we get a palindrome (24677642).

The spelling of 11443231 in words is "eleven million, four hundred forty-three thousand, two hundred thirty-one".