1131204 has 24 divisors (see below), whose sum is σ = 2667168. Its totient is φ = 373120.

The previous prime is 1131191. The next prime is 1131217. The reversal of 1131204 is 4021311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1131191) and next prime (1131217).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1131204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844 + ... + 1724.

It is an arithmetic number, because the mean of its divisors is an integer number (111132).

2^1131204 is an apocalyptic number.

It is an amenable number.

1131204 is an abundant number, since it is smaller than the sum of its proper divisors (1535964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131204 is a wasteful number, since it uses less digits than its factorization.

1131204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1131204 is about 1063.5807444665. The cubic root of 1131204 is about 104.1950236042.

Adding to 1131204 its reverse (4021311), we get a palindrome (5152515).

The spelling of 1131204 in words is "one million, one hundred thirty-one thousand, two hundred four".