1131185 has 16 divisors (see below), whose sum is σ = 1501632. Its totient is φ = 811200.

The previous prime is 1131181. The next prime is 1131191. The reversal of 1131185 is 5811311.

It is not a de Polignac number, because 1131185 - 2² = 1131181 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7127 + ... + 7283.

It is an arithmetic number, because the mean of its divisors is an integer number (93852).

2^1131185 is an apocalyptic number.

It is an amenable number.

1131185 is a deficient number, since it is larger than the sum of its proper divisors (370447).

1131185 is a wasteful number, since it uses less digits than its factorization.

1131185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304.

The product of its digits is 120, while the sum is 20.

The square root of 1131185 is about 1063.5718123380. The cubic root of 1131185 is about 104.1944402386.

Adding to 1131185 its reverse (5811311), we get a palindrome (6942496).

The spelling of 1131185 in words is "one million, one hundred thirty-one thousand, one hundred eighty-five".