13131321203303 has 4 divisors (see below), whose sum is σ = 13211881456248. Its totient is φ = 13050760950360.

The previous prime is 13131321203291. The next prime is 13131321203387. The reversal of 13131321203303 is 30330212313131.

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

It is a cyclic number.

It is not a de Polignac number, because 13131321203303 - 2²⁴ = 13131304426087 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 (13131321223303) 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, 40280126228 + ... + 40280126553.

It is an arithmetic number, because the mean of its divisors is an integer number (3302970364062).

Almost surely, 2^{13131321203303} is an apocalyptic number.

13131321203303 is a deficient number, since it is larger than the sum of its proper divisors (80560252945).

13131321203303 is an equidigital number, since it uses as much as digits as its factorization.

13131321203303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80560252944.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 13131321203303 its reverse (30330212313131), we get a palindrome (43461533516434).

The spelling of 13131321203303 in words is "thirteen trillion, one hundred thirty-one billion, three hundred twenty-one million, two hundred three thousand, three hundred three".