20303322232013 has 2 divisors, whose sum is σ = 20303322232014. Its totient is φ = 20303322232012.

The previous prime is 20303322232009. The next prime is 20303322232021. The reversal of 20303322232013 is 31023222330302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20096186197129 + 207136034884 = 4482877^2 + 455122^2 .

It is a cyclic number.

It is not a de Polignac number, because 20303322232013 - 2² = 20303322232009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20303322232003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151661116006 + 10151661116007.

It is an arithmetic number, because the mean of its divisors is an integer number (10151661116007).

Almost surely, 2^{20303322232013} is an apocalyptic number.

It is an amenable number.

20303322232013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20303322232013 is an equidigital number, since it uses as much as digits as its factorization.

20303322232013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 26.

Adding to 20303322232013 its reverse (31023222330302), we get a palindrome (51326544562315).

The spelling of 20303322232013 in words is "twenty trillion, three hundred three billion, three hundred twenty-two million, two hundred thirty-two thousand, thirteen".