20130103 has 8 divisors (see below), whose sum is σ = 23045408. Its totient is φ = 17224704.

The previous prime is 20130079. The next prime is 20130163. The reversal of 20130103 is 30103102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20130103 - 2²¹ = 18032951 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20130103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2575 + ... + 6847.

It is an arithmetic number, because the mean of its divisors is an integer number (2880676).

Almost surely, 2^20130103 is an apocalyptic number.

20130103 is a deficient number, since it is larger than the sum of its proper divisors (2915305).

20130103 is an equidigital number, since it uses as much as digits as its factorization.

20130103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4953.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 20130103 is about 4486.6583333256. The cubic root of 20130103 is about 272.0290797557.

Adding to 20130103 its reverse (30103102), we get a palindrome (50233205).

The spelling of 20130103 in words is "twenty million, one hundred thirty thousand, one hundred three".