203323011013 has 2 divisors, whose sum is σ = 203323011014. Its totient is φ = 203323011012.

The previous prime is 203323010977. The next prime is 203323011037. The reversal of 203323011013 is 310110323302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202786301124 + 536709889 = 450318^2 + 23167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203323011013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203323011043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101661505506 + 101661505507.

It is an arithmetic number, because the mean of its divisors is an integer number (101661505507).

Almost surely, 2^203323011013 is an apocalyptic number.

It is an amenable number.

203323011013 is a deficient number, since it is larger than the sum of its proper divisors (1).

203323011013 is an equidigital number, since it uses as much as digits as its factorization.

203323011013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 203323011013 its reverse (310110323302), we get a palindrome (513433334315).

The spelling of 203323011013 in words is "two hundred three billion, three hundred twenty-three million, eleven thousand, thirteen".