203131344313 has 12 divisors (see below), whose sum is σ = 204114774528. Its totient is φ = 202151292120.

The previous prime is 203131344287. The next prime is 203131344331. The reversal of 203131344313 is 313443131302.

It is not a de Polignac number, because 203131344313 - 2³³ = 194541409721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203131344373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235377720 + ... + 235378582.

It is an arithmetic number, because the mean of its divisors is an integer number (17009564544).

Almost surely, 2^203131344313 is an apocalyptic number.

It is an amenable number.

203131344313 is a deficient number, since it is larger than the sum of its proper divisors (983430215).

203131344313 is an frugal number, since it uses more digits than its factorization.

203131344313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772 (or 2033 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 203131344313 its reverse (313443131302), we get a palindrome (516574475615).

The spelling of 203131344313 in words is "two hundred three billion, one hundred thirty-one million, three hundred forty-four thousand, three hundred thirteen".