20312011303 has 2 divisors, whose sum is σ = 20312011304. Its totient is φ = 20312011302.

The previous prime is 20312011277. The next prime is 20312011309. The reversal of 20312011303 is 30311021302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20312011303 - 2¹⁷ = 20311880231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20312011309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156005651 + 10156005652.

It is an arithmetic number, because the mean of its divisors is an integer number (10156005652).

Almost surely, 2^20312011303 is an apocalyptic number.

20312011303 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312011303 is an equidigital number, since it uses as much as digits as its factorization.

20312011303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20312011303 its reverse (30311021302), we get a palindrome (50623032605).

Subtracting 20312011303 from its reverse (30311021302), we obtain a palindrome (9999009999).

The spelling of 20312011303 in words is "twenty billion, three hundred twelve million, eleven thousand, three hundred three".