1131328 has 28 divisors (see below), whose sum is σ = 2450592. Its totient is φ = 513920.

The previous prime is 1131323. The next prime is 1131329. The reversal of 1131328 is 8231311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131323) 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, 100 + ... + 1507.

2^1131328 is an apocalyptic number.

It is an amenable number.

1131328 is an abundant number, since it is smaller than the sum of its proper divisors (1319264).

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

1131328 is a wasteful number, since it uses less digits than its factorization.

1131328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630 (or 1620 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 1131328 is about 1063.6390365157. The cubic root of 1131328 is about 104.1988306720.

Adding to 1131328 its reverse (8231311), we get a palindrome (9362639).

It can be divided in two parts, 113 and 1328, that added together give a palindrome (1441).

The spelling of 1131328 in words is "one million, one hundred thirty-one thousand, three hundred twenty-eight".