2101003403 has 4 divisors (see below), whose sum is σ = 2106955608. Its totient is φ = 2095051200.

The previous prime is 2101003391. The next prime is 2101003409. The reversal of 2101003403 is 3043001012.

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 2101003403 - 2¹⁴ = 2100987019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101003409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2975573 + ... + 2976278.

It is an arithmetic number, because the mean of its divisors is an integer number (526738902).

Almost surely, 2^2101003403 is an apocalyptic number.

2101003403 is a deficient number, since it is larger than the sum of its proper divisors (5952205).

2101003403 is an equidigital number, since it uses as much as digits as its factorization.

2101003403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5952204.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2101003403 is about 45836.7036663851. The cubic root of 2101003403 is about 1280.7830907618.

Adding to 2101003403 its reverse (3043001012), we get a palindrome (5144004415).

The spelling of 2101003403 in words is "two billion, one hundred one million, three thousand, four hundred three".