20211311303 has 2 divisors, whose sum is σ = 20211311304. Its totient is φ = 20211311302.

The previous prime is 20211311287. The next prime is 20211311311. The reversal of 20211311303 is 30311311202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20211311303 - 2⁴ = 20211311287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211311363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105655651 + 10105655652.

It is an arithmetic number, because the mean of its divisors is an integer number (10105655652).

Almost surely, 2^20211311303 is an apocalyptic number.

20211311303 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211311303 is an equidigital number, since it uses as much as digits as its factorization.

20211311303 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 17.

Adding to 20211311303 its reverse (30311311202), we get a palindrome (50522622505).

The spelling of 20211311303 in words is "twenty billion, two hundred eleven million, three hundred eleven thousand, three hundred three".