20203000103 has 32 divisors (see below), whose sum is σ = 24324734784. Its totient is φ = 16674768000.

The previous prime is 20203000063. The next prime is 20203000109. The reversal of 20203000103 is 30100030202.

It is not a de Polignac number, because 20203000103 - 2¹⁸ = 20202737959 is a prime.

It is a super-2 number, since 2×20203000103² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (11).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203000109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1045913 + ... + 1065053.

It is an arithmetic number, because the mean of its divisors is an integer number (760147962).

Almost surely, 2^20203000103 is an apocalyptic number.

20203000103 is a deficient number, since it is larger than the sum of its proper divisors (4121734681).

20203000103 is a wasteful number, since it uses less digits than its factorization.

20203000103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19248 (or 19226 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

Adding to 20203000103 its reverse (30100030202), we get a palindrome (50303030305).

The spelling of 20203000103 in words is "twenty billion, two hundred three million, one hundred three", and thus it is an aban number.