1231183 has 4 divisors (see below), whose sum is σ = 1236928. Its totient is φ = 1225440.

The previous prime is 1231177. The next prime is 1231193. The reversal of 1231183 is 3811321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231183 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 1231183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2538 + ... + 2983.

It is an arithmetic number, because the mean of its divisors is an integer number (309232).

2^1231183 is an apocalyptic number.

1231183 is a deficient number, since it is larger than the sum of its proper divisors (5745).

1231183 is an equidigital number, since it uses as much as digits as its factorization.

1231183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5744.

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

The square root of 1231183 is about 1109.5868600520. The cubic root of 1231183 is about 107.1784659631.

The spelling of 1231183 in words is "one million, two hundred thirty-one thousand, one hundred eighty-three".