2013803 has 16 divisors (see below), whose sum is σ = 2371680. Its totient is φ = 1703680.

The previous prime is 2013787. The next prime is 2013821. The reversal of 2013803 is 3083102.

It is not a de Polignac number, because 2013803 - 2⁴ = 2013787 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (2013833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22583 + ... + 22671.

It is an arithmetic number, because the mean of its divisors is an integer number (148230).

2^2013803 is an apocalyptic number.

2013803 is a deficient number, since it is larger than the sum of its proper divisors (357877).

2013803 is an equidigital number, since it uses as much as digits as its factorization.

2013803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2013803 is about 1419.0852687559. The cubic root of 2013803 is about 126.2812855838.

Adding to 2013803 its reverse (3083102), we get a palindrome (5096905).

It can be divided in two parts, 201 and 3803, that added together give a palindrome (4004).

The spelling of 2013803 in words is "two million, thirteen thousand, eight hundred three".