20110003 has 4 divisors (see below), whose sum is σ = 20364640. Its totient is φ = 19855368.

The previous prime is 20109989. The next prime is 20110043. The reversal of 20110003 is 30001102.

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 20110003 - 2⁹ = 20109491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20110043) 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, 127200 + ... + 127357.

It is an arithmetic number, because the mean of its divisors is an integer number (5091160).

Almost surely, 2^20110003 is an apocalyptic number.

20110003 is a deficient number, since it is larger than the sum of its proper divisors (254637).

20110003 is an equidigital number, since it uses as much as digits as its factorization.

20110003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254636.

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

The square root of 20110003 is about 4484.4177994473. The cubic root of 20110003 is about 271.9385088434.

Adding to 20110003 its reverse (30001102), we get a palindrome (50111105).

The spelling of 20110003 in words is "twenty million, one hundred ten thousand, three".