203103333232013 has 4 divisors (see below), whose sum is σ = 210106896446940. Its totient is φ = 196099770017088.

The previous prime is 203103333232003. The next prime is 203103333232031. The reversal of 203103333232013 is 310232333301302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 168944416571044 + 34158916660969 = 12997862^2 + 5844563^2 .

It is not a de Polignac number, because 203103333232013 - 2¹⁸ = 203103332969869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 7003563214897 = 203103333232013 / (2 + 0 + 3 + 1 + 0 + 3 + 3 + 3 + 3 + 2 + 3 + 2 + 0 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203103333232003) 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, 3501781607420 + ... + 3501781607477.

It is an arithmetic number, because the mean of its divisors is an integer number (52526724111735).

Almost surely, 2^{203103333232013} is an apocalyptic number.

It is an amenable number.

203103333232013 is a deficient number, since it is larger than the sum of its proper divisors (7003563214927).

203103333232013 is an equidigital number, since it uses as much as digits as its factorization.

203103333232013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7003563214926.

The product of its (nonzero) digits is 17496, while the sum is 29.

Adding to 203103333232013 its reverse (310232333301302), we get a palindrome (513335666533315).

The spelling of 203103333232013 in words is "two hundred three trillion, one hundred three billion, three hundred thirty-three million, two hundred thirty-two thousand, thirteen".