203303312013 has 16 divisors (see below), whose sum is σ = 271388180160. Its totient is φ = 135377060736.

The previous prime is 203303311993. The next prime is 203303312027. The reversal of 203303312013 is 310213303302.

It is not a de Polignac number, because 203303312013 - 2¹⁰ = 203303310989 is a prime.

It is a super-2 number, since 2×203303312013² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203303312083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21910131 + ... + 21919407.

It is an arithmetic number, because the mean of its divisors is an integer number (16961761260).

Almost surely, 2^203303312013 is an apocalyptic number.

It is an amenable number.

203303312013 is a deficient number, since it is larger than the sum of its proper divisors (68084868147).

203303312013 is a wasteful number, since it uses less digits than its factorization.

203303312013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17036.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 203303312013 its reverse (310213303302), we get a palindrome (513516615315).

The spelling of 203303312013 in words is "two hundred three billion, three hundred three million, three hundred twelve thousand, thirteen".