20312640200003 has 4 divisors (see below), whose sum is σ = 20312951947368. Its totient is φ = 20312328452640.

The previous prime is 20312640199981. The next prime is 20312640200011. The reversal of 20312640200003 is 30000204621302.

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 20312640200003 - 2¹⁸ = 20312639937859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20312640200033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155775926 + ... + 155906267.

It is an arithmetic number, because the mean of its divisors is an integer number (5078237986842).

Almost surely, 2^{20312640200003} is an apocalyptic number.

20312640200003 is a deficient number, since it is larger than the sum of its proper divisors (311747365).

20312640200003 is an equidigital number, since it uses as much as digits as its factorization.

20312640200003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311747364.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20312640200003 its reverse (30000204621302), we get a palindrome (50312844821305).

The spelling of 20312640200003 in words is "twenty trillion, three hundred twelve billion, six hundred forty million, two hundred thousand, three".