11166131 has 4 divisors (see below), whose sum is σ = 11551200. Its totient is φ = 10781064.

The previous prime is 11166083. The next prime is 11166137. The reversal of 11166131 is 13166111.

It is a happy number.

11166131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11166131 - 2²² = 6971827 is a prime.

It is a super-2 number, since 2×11166131² = 249364963018322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11166137) 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, 192491 + ... + 192548.

It is an arithmetic number, because the mean of its divisors is an integer number (2887800).

Almost surely, 2^11166131 is an apocalyptic number.

11166131 is a deficient number, since it is larger than the sum of its proper divisors (385069).

11166131 is an equidigital number, since it uses as much as digits as its factorization.

11166131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385068.

The product of its digits is 108, while the sum is 20.

The square root of 11166131 is about 3341.5761251242. The cubic root of 11166131 is about 223.5120316765.

Subtracting from 11166131 its sum of digits (20), we obtain a palindrome (11166111).

The spelling of 11166131 in words is "eleven million, one hundred sixty-six thousand, one hundred thirty-one".