203112301103013 has 4 divisors (see below), whose sum is σ = 270816401470688. Its totient is φ = 135408200735340.

The previous prime is 203112301102987. The next prime is 203112301103017. The reversal of 203112301103013 is 310301103211302.

It is a happy number.

203112301103013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 203112301103013 - 2⁵ = 203112301102981 is a prime.

It is a super-2 number, since 2×203112301103013² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203112301103017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33852050183833 + ... + 33852050183838.

It is an arithmetic number, because the mean of its divisors is an integer number (67704100367672).

Almost surely, 2^{203112301103013} is an apocalyptic number.

It is an amenable number.

203112301103013 is a deficient number, since it is larger than the sum of its proper divisors (67704100367675).

203112301103013 is an equidigital number, since it uses as much as digits as its factorization.

203112301103013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67704100367674.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 203112301103013 its reverse (310301103211302), we get a palindrome (513413404314315).

The spelling of 203112301103013 in words is "two hundred three trillion, one hundred twelve billion, three hundred one million, one hundred three thousand, thirteen".