2003113001 has 4 divisors (see below), whose sum is σ = 2007048900. Its totient is φ = 1999177104.

The previous prime is 2003112977. The next prime is 2003113039. The reversal of 2003113001 is 1003113002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1656408601 + 346704400 = 40699^2 + 18620^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003113001 - 2¹⁴ = 2003096617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003113051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1967186 + ... + 1968203.

It is an arithmetic number, because the mean of its divisors is an integer number (501762225).

Almost surely, 2^2003113001 is an apocalyptic number.

It is an amenable number.

2003113001 is a deficient number, since it is larger than the sum of its proper divisors (3935899).

2003113001 is an equidigital number, since it uses as much as digits as its factorization.

2003113001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3935898.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 2003113001 is about 44756.1504265056. The cubic root of 2003113001 is about 1260.5744002800.

Adding to 2003113001 its reverse (1003113002), we get a palindrome (3006226003).

Subtracting from 2003113001 its reverse (1003113002), we obtain a palindrome (999999999).

The spelling of 2003113001 in words is "two billion, three million, one hundred thirteen thousand, one".