2003101 has 4 divisors (see below), whose sum is σ = 2011932. Its totient is φ = 1994272.

The previous prime is 2003087. The next prime is 2003119. The reversal of 2003101 is 1013002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1013002 = 2 ⋅506501.

It can be written as a sum of positive squares in 2 ways, for example, as 900601 + 1102500 = 949^2 + 1050^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003101 - 2¹⁵ = 1970333 is a prime.

It is a Duffinian number.

2003101 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003191) 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, 4066 + ... + 4531.

It is an arithmetic number, because the mean of its divisors is an integer number (502983).

2^2003101 is an apocalyptic number.

It is an amenable number.

2003101 is a deficient number, since it is larger than the sum of its proper divisors (8831).

2003101 is an equidigital number, since it uses as much as digits as its factorization.

2003101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8830.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 2003101 is about 1415.3095067864. The cubic root of 2003101 is about 126.0571882834.

Adding to 2003101 its reverse (1013002), we get a palindrome (3016103).

Subtracting from 2003101 its reverse (1013002), we obtain a palindrome (990099).

The spelling of 2003101 in words is "two million, three thousand, one hundred one".