20103003 has 12 divisors (see below), whose sum is σ = 30039360. Its totient is φ = 12939696.

The previous prime is 20102983. The next prime is 20103047. The reversal of 20103003 is 30030102.

It is a happy number.

It is not a de Polignac number, because 20103003 - 2⁹ = 20102491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38251 + ... + 38772.

It is an arithmetic number, because the mean of its divisors is an integer number (2503280).

Almost surely, 2^20103003 is an apocalyptic number.

20103003 is a deficient number, since it is larger than the sum of its proper divisors (9936357).

20103003 is a wasteful number, since it uses less digits than its factorization.

20103003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77058 (or 77055 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 20103003 is about 4483.6372511612. The cubic root of 20103003 is about 271.9069525664.

Adding to 20103003 its reverse (30030102), we get a palindrome (50133105).

The spelling of 20103003 in words is "twenty million, one hundred three thousand, three".