20312330203 has 4 divisors (see below), whose sum is σ = 22158905688. Its totient is φ = 18465754720.

The previous prime is 20312330161. The next prime is 20312330219. The reversal of 20312330203 is 30203321302.

It is a happy number.

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-20312330203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20312330503) 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, 923287726 + ... + 923287747.

It is an arithmetic number, because the mean of its divisors is an integer number (5539726422).

Almost surely, 2^20312330203 is an apocalyptic number.

20312330203 is a deficient number, since it is larger than the sum of its proper divisors (1846575485).

20312330203 is a wasteful number, since it uses less digits than its factorization.

20312330203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846575484.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20312330203 its reverse (30203321302), we get a palindrome (50515651505).

The spelling of 20312330203 in words is "twenty billion, three hundred twelve million, three hundred thirty thousand, two hundred three".