20303323213 has 2 divisors, whose sum is σ = 20303323214. Its totient is φ = 20303323212.

The previous prime is 20303323211. The next prime is 20303323217. The reversal of 20303323213 is 31232330302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16855049929 + 3448273284 = 129827^2 + 58722^2 .

It is a cyclic number.

It is not a de Polignac number, because 20303323213 - 2¹ = 20303323211 is a prime.

Together with 20303323211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20303323211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151661606 + 10151661607.

It is an arithmetic number, because the mean of its divisors is an integer number (10151661607).

Almost surely, 2^20303323213 is an apocalyptic number.

It is an amenable number.

20303323213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20303323213 is an equidigital number, since it uses as much as digits as its factorization.

20303323213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 22.

Adding to 20303323213 its reverse (31232330302), we get a palindrome (51535653515).

The spelling of 20303323213 in words is "twenty billion, three hundred three million, three hundred twenty-three thousand, two hundred thirteen".