1143811 has 8 divisors (see below), whose sum is σ = 1232064. Its totient is φ = 1057920.

The previous prime is 1143809. The next prime is 1143817. The reversal of 1143811 is 1183411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1143811 - 2¹ = 1143809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486 + ... + 1588.

It is an arithmetic number, because the mean of its divisors is an integer number (154008).

2^1143811 is an apocalyptic number.

1143811 is a deficient number, since it is larger than the sum of its proper divisors (88253).

1143811 is a wasteful number, since it uses less digits than its factorization.

1143811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181.

The product of its digits is 96, while the sum is 19.

The square root of 1143811 is about 1069.4910004296. The cubic root of 1143811 is about 104.5806707505.

It can be divided in two parts, 11438 and 11, that added together give a square (11449 = 107²).

The spelling of 1143811 in words is "one million, one hundred forty-three thousand, eight hundred eleven".