2013443 has 4 divisors (see below), whose sum is σ = 2101008. Its totient is φ = 1925880.

The previous prime is 2013439. The next prime is 2013457. The reversal of 2013443 is 3443102.

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 2013443 - 2² = 2013439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2013043) 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, 43748 + ... + 43793.

It is an arithmetic number, because the mean of its divisors is an integer number (525252).

2^2013443 is an apocalyptic number.

2013443 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2013443 is a deficient number, since it is larger than the sum of its proper divisors (87565).

2013443 is an equidigital number, since it uses as much as digits as its factorization.

2013443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87564.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2013443 is about 1418.9584208144. The cubic root of 2013443 is about 126.2737601917.

Adding to 2013443 its reverse (3443102), we get a palindrome (5456545).

The spelling of 2013443 in words is "two million, thirteen thousand, four hundred forty-three".