20310312303 has 8 divisors (see below), whose sum is σ = 30089351600. Its totient is φ = 13540208184.

The previous prime is 20310312299. The next prime is 20310312317. The reversal of 20310312303 is 30321301302.

20310312303 is a `hidden beast` number, since 20 + 31 + 0 + 312 + 303 = 666.

It is not a de Polignac number, because 20310312303 - 2² = 20310312299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310312353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376116868 + ... + 376116921.

It is an arithmetic number, because the mean of its divisors is an integer number (3761168950).

Almost surely, 2^20310312303 is an apocalyptic number.

20310312303 is a deficient number, since it is larger than the sum of its proper divisors (9779039297).

20310312303 is an equidigital number, since it uses as much as digits as its factorization.

20310312303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752233798 (or 752233792 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20310312303 its reverse (30321301302), we get a palindrome (50631613605).

The spelling of 20310312303 in words is "twenty billion, three hundred ten million, three hundred twelve thousand, three hundred three".