20144303 has 4 divisors (see below), whose sum is σ = 21329280. Its totient is φ = 18959328.

The previous prime is 20144279. The next prime is 20144321. The reversal of 20144303 is 30344102.

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

It is a cyclic number.

It is not a de Polignac number, because 20144303 - 2⁶ = 20144239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1184959 = 20144303 / (2 + 0 + 1 + 4 + 4 + 3 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144903) 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 3 ways as a sum of consecutive naturals, for example, 592463 + ... + 592496.

It is an arithmetic number, because the mean of its divisors is an integer number (5332320).

Almost surely, 2^20144303 is an apocalyptic number.

20144303 is a deficient number, since it is larger than the sum of its proper divisors (1184977).

20144303 is a wasteful number, since it uses less digits than its factorization.

20144303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184976.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20144303 is about 4488.2405238579. The cubic root of 20144303 is about 272.0930288406.

Adding to 20144303 its reverse (30344102), we get a palindrome (50488405).

The spelling of 20144303 in words is "twenty million, one hundred forty-four thousand, three hundred three".