20144203 has 4 divisors (see below), whose sum is σ = 20794048. Its totient is φ = 19494360.

The previous prime is 20144143. The next prime is 20144209. The reversal of 20144203 is 30244102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20144203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20144209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324876 + ... + 324937.

It is an arithmetic number, because the mean of its divisors is an integer number (5198512).

Almost surely, 2^20144203 is an apocalyptic number.

20144203 is a deficient number, since it is larger than the sum of its proper divisors (649845).

20144203 is an equidigital number, since it uses as much as digits as its factorization.

20144203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649844.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20144203 is about 4488.2293836211. The cubic root of 20144203 is about 272.0925786000.

Adding to 20144203 its reverse (30244102), we get a palindrome (50388305).

The spelling of 20144203 in words is "twenty million, one hundred forty-four thousand, two hundred three".