20200013 has 2 divisors, whose sum is σ = 20200014. Its totient is φ = 20200012.

The previous prime is 20199973. The next prime is 20200027. The reversal of 20200013 is 31000202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19386409 + 813604 = 4403^2 + 902^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200013 - 2²⁰ = 19151437 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20200043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100006 + 10100007.

It is an arithmetic number, because the mean of its divisors is an integer number (10100007).

Almost surely, 2^20200013 is an apocalyptic number.

It is an amenable number.

20200013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200013 is an equidigital number, since it uses as much as digits as its factorization.

20200013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 20200013 is about 4494.4424570796. The cubic root of 20200013 is about 272.3436265804.

Adding to 20200013 its reverse (31000202), we get a palindrome (51200215).

The spelling of 20200013 in words is "twenty million, two hundred thousand, thirteen".