20110203 has 24 divisors (see below), whose sum is σ = 30126096. Its totient is φ = 12916800.

The previous prime is 20110183. The next prime is 20110217. The reversal of 20110203 is 30201102.

It is a happy number.

It is not a de Polignac number, because 20110203 - 2¹⁶ = 20044667 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (20110243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43393 + ... + 43853.

It is an arithmetic number, because the mean of its divisors is an integer number (1255254).

Almost surely, 2^20110203 is an apocalyptic number.

20110203 is a deficient number, since it is larger than the sum of its proper divisors (10015893).

20110203 is a wasteful number, since it uses less digits than its factorization.

20110203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 20110203 is about 4484.4400988306. The cubic root of 20110203 is about 271.9394103437.

Adding to 20110203 its reverse (30201102), we get a palindrome (50311305).

It can be divided in two parts, 201 and 10203, that added together give a square (10404 = 102²).

The spelling of 20110203 in words is "twenty million, one hundred ten thousand, two hundred three".