1131028 has 12 divisors (see below), whose sum is σ = 1993012. Its totient is φ = 561600.

The previous prime is 1131023. The next prime is 1131047. The reversal of 1131028 is 8201311.

It can be written as a sum of positive squares in 2 ways, for example, as 232324 + 898704 = 482^2 + 948^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131023) 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, 273 + ... + 1528.

2^1131028 is an apocalyptic number.

It is an amenable number.

1131028 is a deficient number, since it is larger than the sum of its proper divisors (861984).

1131028 is a wasteful number, since it uses less digits than its factorization.

1131028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962 (or 1960 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1131028 is about 1063.4980018787. The cubic root of 1131028 is about 104.1896195465.

Adding to 1131028 its reverse (8201311), we get a palindrome (9332339).

The spelling of 1131028 in words is "one million, one hundred thirty-one thousand, twenty-eight".