20304324203 has 4 divisors (see below), whose sum is σ = 20853089760. Its totient is φ = 19755558648.

The previous prime is 20304324167. The next prime is 20304324223. The reversal of 20304324203 is 30242340302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30242340302 = 2 ⋅15121170151.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20304324203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20304324223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274382723 + ... + 274382796.

It is an arithmetic number, because the mean of its divisors is an integer number (5213272440).

Almost surely, 2^20304324203 is an apocalyptic number.

20304324203 is a deficient number, since it is larger than the sum of its proper divisors (548765557).

20304324203 is an equidigital number, since it uses as much as digits as its factorization.

20304324203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548765556.

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

Adding to 20304324203 its reverse (30242340302), we get a palindrome (50546664505).

The spelling of 20304324203 in words is "twenty billion, three hundred four million, three hundred twenty-four thousand, two hundred three".