20300203 has 16 divisors (see below), whose sum is σ = 26184960. Its totient is φ = 15271200.

The previous prime is 20300201. The next prime is 20300233. The reversal of 20300203 is 30200302.

It is not a de Polignac number, because 20300203 - 2¹ = 20300201 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 20300203.

It is not an unprimeable number, because it can be changed into a prime (20300201) 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 15 ways as a sum of consecutive naturals, for example, 2313 + ... + 6778.

It is an arithmetic number, because the mean of its divisors is an integer number (1636560).

Almost surely, 2^20300203 is an apocalyptic number.

20300203 is a deficient number, since it is larger than the sum of its proper divisors (5884757).

20300203 is a wasteful number, since it uses less digits than its factorization.

20300203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9138.

The product of its (nonzero) digits is 36, while the sum is 10.

The square root of 20300203 is about 4505.5746581319. The cubic root of 20300203 is about 272.7931497192.

Adding to 20300203 its reverse (30200302), we get a palindrome (50500505).

Subtracting 20300203 from its reverse (30200302), we obtain a palindrome (9900099).

It can be divided in two parts, 20300 and 203, that multiplied together give a square (4120900 = 2030²).

The spelling of 20300203 in words is "twenty million, three hundred thousand, two hundred three".