20103318013 has 2 divisors, whose sum is σ = 20103318014. Its totient is φ = 20103318012.

The previous prime is 20103317909. The next prime is 20103318029. The reversal of 20103318013 is 31081330102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18382478724 + 1720839289 = 135582^2 + 41483^2 .

It is a cyclic number.

It is not a de Polignac number, because 20103318013 - 2¹⁷ = 20103186941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20103318073) 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, 10051659006 + 10051659007.

It is an arithmetic number, because the mean of its divisors is an integer number (10051659007).

Almost surely, 2^20103318013 is an apocalyptic number.

It is an amenable number.

20103318013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20103318013 is an equidigital number, since it uses as much as digits as its factorization.

20103318013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20103318013 its reverse (31081330102), we get a palindrome (51184648115).

The spelling of 20103318013 in words is "twenty billion, one hundred three million, three hundred eighteen thousand, thirteen".