1131504 has 40 divisors (see below), whose sum is σ = 3190272. Its totient is φ = 342720.

The previous prime is 1131491. The next prime is 1131509. The reversal of 1131504 is 4051311.

It is a super-3 number, since 3×1131504³ = 4345998133308936192, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544 + ... + 1599.

2^1131504 is an apocalyptic number.

It is an amenable number.

1131504 is an abundant number, since it is smaller than the sum of its proper divisors (2058768).

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

1131504 is a wasteful number, since it uses less digits than its factorization.

1131504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165 (or 2159 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1131504 is about 1063.7217681330. The cubic root of 1131504 is about 104.2042337745.

Adding to 1131504 its reverse (4051311), we get a palindrome (5182815).

The spelling of 1131504 in words is "one million, one hundred thirty-one thousand, five hundred four".