13031103310021 has 4 divisors (see below), whose sum is σ = 13451461481344. Its totient is φ = 12610745138700.

The previous prime is 13031103310007. The next prime is 13031103310031. The reversal of 13031103310021 is 12001330113031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13031103310021 - 2⁹ = 13031103309509 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 (13031103310031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210179085615 + ... + 210179085676.

It is an arithmetic number, because the mean of its divisors is an integer number (3362865370336).

Almost surely, 2^{13031103310021} is an apocalyptic number.

It is an amenable number.

13031103310021 is a deficient number, since it is larger than the sum of its proper divisors (420358171323).

13031103310021 is an equidigital number, since it uses as much as digits as its factorization.

13031103310021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420358171322.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 13031103310021 its reverse (12001330113031), we get a palindrome (25032433423052).

The spelling of 13031103310021 in words is "thirteen trillion, thirty-one billion, one hundred three million, three hundred ten thousand, twenty-one".