20424303203 has 4 divisors (see below), whose sum is σ = 20431992840. Its totient is φ = 20416613568.

The previous prime is 20424303199. The next prime is 20424303233. The reversal of 20424303203 is 30230342402.

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 20424303203 - 2² = 20424303199 is a prime.

It is a super-2 number, since 2×20424303203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20424303233) 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, 3840833 + ... + 3846146.

It is an arithmetic number, because the mean of its divisors is an integer number (5107998210).

Almost surely, 2^20424303203 is an apocalyptic number.

20424303203 is a deficient number, since it is larger than the sum of its proper divisors (7689637).

20424303203 is an equidigital number, since it uses as much as digits as its factorization.

20424303203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7689636.

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 20424303203 its reverse (30230342402), we get a palindrome (50654645605).

The spelling of 20424303203 in words is "twenty billion, four hundred twenty-four million, three hundred three thousand, two hundred three".