2004311 has 4 divisors (see below), whose sum is σ = 2025072. Its totient is φ = 1983552.

The previous prime is 2004293. The next prime is 2004313. The reversal of 2004311 is 1134002.

It is a happy number.

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-2004311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2004292 and 2004301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2004313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10235 + ... + 10428.

It is an arithmetic number, because the mean of its divisors is an integer number (506268).

2^2004311 is an apocalyptic number.

2004311 is a deficient number, since it is larger than the sum of its proper divisors (20761).

2004311 is an equidigital number, since it uses as much as digits as its factorization.

2004311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20760.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2004311 is about 1415.7369105876. The cubic root of 2004311 is about 126.0825653523.

Adding to 2004311 its reverse (1134002), we get a palindrome (3138313).

The spelling of 2004311 in words is "two million, four thousand, three hundred eleven".