20203244213 has 2 divisors, whose sum is σ = 20203244214. Its totient is φ = 20203244212.

The previous prime is 20203244209. The next prime is 20203244219. The reversal of 20203244213 is 31244230202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19845202129 + 358042084 = 140873^2 + 18922^2 .

It is a cyclic number.

It is not a de Polignac number, because 20203244213 - 2² = 20203244209 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 (20203244219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101622106 + 10101622107.

It is an arithmetic number, because the mean of its divisors is an integer number (10101622107).

Almost surely, 2^20203244213 is an apocalyptic number.

It is an amenable number.

20203244213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203244213 is an equidigital number, since it uses as much as digits as its factorization.

20203244213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20203244213 its reverse (31244230202), we get a palindrome (51447474415).

The spelling of 20203244213 in words is "twenty billion, two hundred three million, two hundred forty-four thousand, two hundred thirteen".