203003321113 has 2 divisors, whose sum is σ = 203003321114. Its totient is φ = 203003321112.

The previous prime is 203003321089. The next prime is 203003321141. The reversal of 203003321113 is 311123300302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203001610249 + 1710864 = 450557^2 + 1308^2 .

It is a cyclic number.

It is not a de Polignac number, because 203003321113 - 2²¹ = 203001223961 is a prime.

It is not a weakly prime, because it can be changed into another prime (203003321713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101501660556 + 101501660557.

It is an arithmetic number, because the mean of its divisors is an integer number (101501660557).

Almost surely, 2^203003321113 is an apocalyptic number.

It is an amenable number.

203003321113 is a deficient number, since it is larger than the sum of its proper divisors (1).

203003321113 is an equidigital number, since it uses as much as digits as its factorization.

203003321113 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 203003321113 its reverse (311123300302), we get a palindrome (514126621415).

The spelling of 203003321113 in words is "two hundred three billion, three million, three hundred twenty-one thousand, one hundred thirteen".