11173231 has 4 divisors (see below), whose sum is σ = 11183832. Its totient is φ = 11162632.

The previous prime is 11173229. The next prime is 11173289. The reversal of 11173231 is 13237111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11173231 - 2¹ = 11173229 is a prime.

It is a super-2 number, since 2×11173231² = 249682181958722, 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 = 11173199 and 11173208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11173291) 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, 3520 + ... + 5893.

It is an arithmetic number, because the mean of its divisors is an integer number (2795958).

Almost surely, 2^11173231 is an apocalyptic number.

11173231 is a deficient number, since it is larger than the sum of its proper divisors (10601).

11173231 is an equidigital number, since it uses as much as digits as its factorization.

11173231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10600.

The product of its digits is 126, while the sum is 19.

The square root of 11173231 is about 3342.6383292244. The cubic root of 11173231 is about 223.5593951184.

The spelling of 11173231 in words is "eleven million, one hundred seventy-three thousand, two hundred thirty-one".