1133811 has 24 divisors (see below), whose sum is σ = 1956240. Its totient is φ = 647136.

The previous prime is 1133809. The next prime is 1133819. The reversal of 1133811 is 1183311.

It is a happy number.

It is not a de Polignac number, because 1133811 - 2¹ = 1133809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1133819) 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 23 ways as a sum of consecutive naturals, for example, 895 + ... + 1751.

It is an arithmetic number, because the mean of its divisors is an integer number (81510).

2^1133811 is an apocalyptic number.

1133811 is a deficient number, since it is larger than the sum of its proper divisors (822429).

1133811 is an equidigital number, since it uses as much as digits as its factorization.

1133811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880 (or 867 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 1133811 is about 1064.8056160633. The cubic root of 1133811 is about 104.2750056470.

The spelling of 1133811 in words is "one million, one hundred thirty-three thousand, eight hundred eleven".