20012331303203 has 4 divisors (see below), whose sum is σ = 20012717924760. Its totient is φ = 20011944681648.

The previous prime is 20012331303199. The next prime is 20012331303247. The reversal of 20012331303203 is 30230313321002.

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 20012331303203 - 2² = 20012331303199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012331302203) 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, 193233125 + ... + 193336662.

It is an arithmetic number, because the mean of its divisors is an integer number (5003179481190).

Almost surely, 2^{20012331303203} is an apocalyptic number.

20012331303203 is a deficient number, since it is larger than the sum of its proper divisors (386621557).

20012331303203 is an equidigital number, since it uses as much as digits as its factorization.

20012331303203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386621556.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20012331303203 its reverse (30230313321002), we get a palindrome (50242644624205).

The spelling of 20012331303203 in words is "twenty trillion, twelve billion, three hundred thirty-one million, three hundred three thousand, two hundred three".