203310113081 has 2 divisors, whose sum is σ = 203310113082. Its totient is φ = 203310113080.

The previous prime is 203310113023. The next prime is 203310113131. The reversal of 203310113081 is 180311013302.

203310113081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202036765225 + 1273347856 = 449485^2 + 35684^2 .

It is a cyclic number.

It is not a de Polignac number, because 203310113081 - 2¹⁴ = 203310096697 is a prime.

It is a super-2 number, since 2×203310113081² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (203310113581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101655056540 + 101655056541.

It is an arithmetic number, because the mean of its divisors is an integer number (101655056541).

Almost surely, 2^203310113081 is an apocalyptic number.

It is an amenable number.

203310113081 is a deficient number, since it is larger than the sum of its proper divisors (1).

203310113081 is an equidigital number, since it uses as much as digits as its factorization.

203310113081 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 23.

Adding to 203310113081 its reverse (180311013302), we get a palindrome (383621126383).

The spelling of 203310113081 in words is "two hundred three billion, three hundred ten million, one hundred thirteen thousand, eighty-one".