1131284 has 24 divisors (see below), whose sum is σ = 2468928. Its totient is φ = 440640.

The previous prime is 1131271. The next prime is 1131307. The reversal of 1131284 is 4821311.

1131284 = 67² + 68² + ... + 154².

1131284 is nontrivially palindromic in base 8.

It is a congruent number.

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, 1529 + ... + 2144.

It is an arithmetic number, because the mean of its divisors is an integer number (102872).

2^1131284 is an apocalyptic number.

1131284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1131284 is an abundant number, since it is smaller than the sum of its proper divisors (1337644).

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

1131284 is a wasteful number, since it uses less digits than its factorization.

1131284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3695 (or 3693 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

The square root of 1131284 is about 1063.6183526059. The cubic root of 1131284 is about 104.1974798088.

Adding to 1131284 its reverse (4821311), we get a palindrome (5952595).

The spelling of 1131284 in words is "one million, one hundred thirty-one thousand, two hundred eighty-four".