203103131312323 has 16 divisors (see below), whose sum is σ = 222111959210496. Its totient is φ = 184185359598240.

The previous prime is 203103131312311. The next prime is 203103131312327. The reversal of 203103131312323 is 323213131301302.

It is a happy number.

203103131312323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-203103131312323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203103131312291 and 203103131312300.

It is not an unprimeable number, because it can be changed into a prime (203103131312327) 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, 11088865 + ... + 23003677.

It is an arithmetic number, because the mean of its divisors is an integer number (13881997450656).

Almost surely, 2^{203103131312323} is an apocalyptic number.

203103131312323 is a deficient number, since it is larger than the sum of its proper divisors (19008827898173).

203103131312323 is a wasteful number, since it uses less digits than its factorization.

203103131312323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11918634.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 203103131312323 its reverse (323213131301302), we get a palindrome (526316262613625).

The spelling of 203103131312323 in words is "two hundred three trillion, one hundred three billion, one hundred thirty-one million, three hundred twelve thousand, three hundred twenty-three".