203303201011213 has 4 divisors (see below), whose sum is σ = 215262212835420. Its totient is φ = 191344189187008.

The previous prime is 203303201011201. The next prime is 203303201011259. The reversal of 203303201011213 is 312110102303302.

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 156170335156969 + 47132865854244 = 12496813^2 + 6865338^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203303201011213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203303201911213) 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, 5979505912078 + ... + 5979505912111.

It is an arithmetic number, because the mean of its divisors is an integer number (53815553208855).

Almost surely, 2^{203303201011213} is an apocalyptic number.

It is an amenable number.

203303201011213 is a deficient number, since it is larger than the sum of its proper divisors (11959011824207).

203303201011213 is a wasteful number, since it uses less digits than its factorization.

203303201011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11959011824206.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 203303201011213 its reverse (312110102303302), we get a palindrome (515413303314515).

The spelling of 203303201011213 in words is "two hundred three trillion, three hundred three billion, two hundred one million, eleven thousand, two hundred thirteen".