1131128 has 16 divisors (see below), whose sum is σ = 2189760. Its totient is φ = 547200.

The previous prime is 1131121. The next prime is 1131131. The reversal of 1131128 is 8211311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131121) 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, 2033 + ... + 2528.

It is an arithmetic number, because the mean of its divisors is an integer number (136860).

2^1131128 is an apocalyptic number.

It is an amenable number.

1131128 is a deficient number, since it is larger than the sum of its proper divisors (1058632).

1131128 is a wasteful number, since it uses less digits than its factorization.

1131128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4598 (or 4594 counting only the distinct ones).

The product of its digits is 48, while the sum is 17.

The square root of 1131128 is about 1063.5450155024. The cubic root of 1131128 is about 104.1926901026.

Adding to 1131128 its reverse (8211311), we get a palindrome (9342439).

The spelling of 1131128 in words is "one million, one hundred thirty-one thousand, one hundred twenty-eight".