20303202013 has 2 divisors, whose sum is σ = 20303202014. Its totient is φ = 20303202012.

The previous prime is 20303201981. The next prime is 20303202061. The reversal of 20303202013 is 31020230302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12267334564 + 8035867449 = 110758^2 + 89643^2 .

It is a cyclic number.

It is not a de Polignac number, because 20303202013 - 2⁵ = 20303201981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20303203013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151601006 + 10151601007.

It is an arithmetic number, because the mean of its divisors is an integer number (10151601007).

Almost surely, 2^20303202013 is an apocalyptic number.

It is an amenable number.

20303202013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20303202013 is an equidigital number, since it uses as much as digits as its factorization.

20303202013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20303202013 its reverse (31020230302), we get a palindrome (51323432315).

The spelling of 20303202013 in words is "twenty billion, three hundred three million, two hundred two thousand, thirteen".