2113001003 has 4 divisors (see below), whose sum is σ = 2113899840. Its totient is φ = 2112102168.

The previous prime is 2113000997. The next prime is 2113001027. The reversal of 2113001003 is 3001003112.

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 2113001003 - 2¹⁰ = 2112999979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113001063) 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, 445883 + ... + 450596.

It is an arithmetic number, because the mean of its divisors is an integer number (528474960).

Almost surely, 2^2113001003 is an apocalyptic number.

2113001003 is a deficient number, since it is larger than the sum of its proper divisors (898837).

2113001003 is an equidigital number, since it uses as much as digits as its factorization.

2113001003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898836.

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

The square root of 2113001003 is about 45967.3906481540. The cubic root of 2113001003 is about 1283.2163989406.

Adding to 2113001003 its reverse (3001003112), we get a palindrome (5114004115).

The spelling of 2113001003 in words is "two billion, one hundred thirteen million, one thousand, three".