11243231 has 4 divisors (see below), whose sum is σ = 11835000. Its totient is φ = 10651464.

The previous prime is 11243191. The next prime is 11243233. The reversal of 11243231 is 13234211.

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 11243231 - 2¹⁴ = 11226847 is a prime.

It is a super-2 number, since 2×11243231² = 252820486638722, 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 (11243233) 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, 295856 + ... + 295893.

It is an arithmetic number, because the mean of its divisors is an integer number (2958750).

Almost surely, 2^11243231 is an apocalyptic number.

11243231 is a deficient number, since it is larger than the sum of its proper divisors (591769).

11243231 is an equidigital number, since it uses as much as digits as its factorization.

11243231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591768.

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

The square root of 11243231 is about 3353.0927514759. The cubic root of 11243231 is about 224.0252881208.

Adding to 11243231 its reverse (13234211), we get a palindrome (24477442).

The spelling of 11243231 in words is "eleven million, two hundred forty-three thousand, two hundred thirty-one".