1131283 has 4 divisors (see below), whose sum is σ = 1167808. Its totient is φ = 1094760.

The previous prime is 1131271. The next prime is 1131307. The reversal of 1131283 is 3821311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1131283 - 2¹⁷ = 1000211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131283.

It is not an unprimeable number, because it can be changed into a prime (1131223) 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, 18216 + ... + 18277.

It is an arithmetic number, because the mean of its divisors is an integer number (291952).

2^1131283 is an apocalyptic number.

1131283 is a deficient number, since it is larger than the sum of its proper divisors (36525).

1131283 is an equidigital number, since it uses as much as digits as its factorization.

1131283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36524.

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

The square root of 1131283 is about 1063.6178825123. The cubic root of 1131283 is about 104.1974491070.

Adding to 1131283 its reverse (3821311), we get a palindrome (4952594).

The spelling of 1131283 in words is "one million, one hundred thirty-one thousand, two hundred eighty-three".