2113803 has 16 divisors (see below), whose sum is σ = 3174400. Its totient is φ = 1389960.

The previous prime is 2113801. The next prime is 2113819. The reversal of 2113803 is 3083112.

It is not a de Polignac number, because 2113803 - 2¹ = 2113801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113801) 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, 1638 + ... + 2628.

It is an arithmetic number, because the mean of its divisors is an integer number (198400).

2^2113803 is an apocalyptic number.

2113803 is a deficient number, since it is larger than the sum of its proper divisors (1060597).

2113803 is an equidigital number, since it uses as much as digits as its factorization.

2113803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079 (or 1073 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2113803 is about 1453.8923619030. The cubic root of 2113803 is about 128.3378728178.

Adding to 2113803 its reverse (3083112), we get a palindrome (5196915).

It can be divided in two parts, 2113 and 803, that added together give a square (2916 = 54²).

The spelling of 2113803 in words is "two million, one hundred thirteen thousand, eight hundred three".