11105231 has 4 divisors (see below), whose sum is σ = 11488200. Its totient is φ = 10722264.

The previous prime is 11105221. The next prime is 11105243. The reversal of 11105231 is 13250111.

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 11105231 - 2⁶ = 11105167 is a prime.

It is a super-2 number, since 2×11105231² = 246652311126722, 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 (11105201) 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, 191441 + ... + 191498.

It is an arithmetic number, because the mean of its divisors is an integer number (2872050).

Almost surely, 2^11105231 is an apocalyptic number.

11105231 is a deficient number, since it is larger than the sum of its proper divisors (382969).

11105231 is an equidigital number, since it uses as much as digits as its factorization.

11105231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382968.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 11105231 is about 3332.4511999428. The cubic root of 11105231 is about 223.1049463469.

Adding to 11105231 its reverse (13250111), we get a palindrome (24355342).

The spelling of 11105231 in words is "eleven million, one hundred five thousand, two hundred thirty-one".