20010203 has 16 divisors (see below), whose sum is σ = 21617280. Its totient is φ = 18485376.

The previous prime is 20010197. The next prime is 20010209. The reversal of 20010203 is 30201002.

It is an interprime number because it is at equal distance from previous prime (20010197) and next prime (20010209).

It is a cyclic number.

It is not a de Polignac number, because 20010203 - 2⁴ = 20010187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20010209) 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, 72101 + ... + 72377.

It is an arithmetic number, because the mean of its divisors is an integer number (1351080).

Almost surely, 2^20010203 is an apocalyptic number.

20010203 is a deficient number, since it is larger than the sum of its proper divisors (1607077).

20010203 is a wasteful number, since it uses less digits than its factorization.

20010203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 20010203 is about 4473.2765396295. The cubic root of 20010203 is about 271.4879124840.

Adding to 20010203 its reverse (30201002), we get a palindrome (50211205).

The spelling of 20010203 in words is "twenty million, ten thousand, two hundred three".