100203 has 8 divisors (see below), whose sum is σ = 135168. Its totient is φ = 66024.

The previous prime is 100193. The next prime is 100207. The reversal of 100203 is 302001.

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

It is not a de Polignac number, because 100203 - 2¹⁶ = 34667 is a prime.

100203 is a lucky number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 100191 and 100200.

It is not an unprimeable number, because it can be changed into a prime (100207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250 + ... + 512.

It is an arithmetic number, because the mean of its divisors is an integer number (16896).

2¹⁰⁰²⁰³ is an apocalyptic number.

100203 is a deficient number, since it is larger than the sum of its proper divisors (34965).

100203 is a wasteful number, since it uses less digits than its factorization.

100203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393.

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

The square root of 100203 is about 316.5485744716. The cubic root of 100203 is about 46.4472751917.

Adding to 100203 its reverse (302001), we get a palindrome (402204).

It can be divided in two parts, 100 and 203, that added together give a palindrome (303).

The spelling of 100203 in words is "one hundred thousand, two hundred three", and thus it is an iban number.