11159231 has 4 divisors (see below), whose sum is σ = 11418792. Its totient is φ = 10899672.

The previous prime is 11159221. The next prime is 11159233. The reversal of 11159231 is 13295111.

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 11159231 - 2⁶ = 11159167 is a prime.

It is a super-2 number, since 2×11159231² = 249056873022722, 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 = 11159197 and 11159206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11159233) 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, 129716 + ... + 129801.

It is an arithmetic number, because the mean of its divisors is an integer number (2854698).

Almost surely, 2^11159231 is an apocalyptic number.

11159231 is a deficient number, since it is larger than the sum of its proper divisors (259561).

11159231 is an equidigital number, since it uses as much as digits as its factorization.

11159231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259560.

The product of its digits is 270, while the sum is 23.

The square root of 11159231 is about 3340.5435186508. The cubic root of 11159231 is about 223.4659831751.

The spelling of 11159231 in words is "eleven million, one hundred fifty-nine thousand, two hundred thirty-one".