13120440131023 has 4 divisors (see below), whose sum is σ = 13440450865968. Its totient is φ = 12800429396080.

The previous prime is 13120440131021. The next prime is 13120440131047. The reversal of 13120440131023 is 32013104402131.

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 13120440131023 - 2¹ = 13120440131021 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 (13120440131021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160005367411 + ... + 160005367492.

It is an arithmetic number, because the mean of its divisors is an integer number (3360112716492).

Almost surely, 2^{13120440131023} is an apocalyptic number.

13120440131023 is a deficient number, since it is larger than the sum of its proper divisors (320010734945).

13120440131023 is an equidigital number, since it uses as much as digits as its factorization.

13120440131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320010734944.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 13120440131023 its reverse (32013104402131), we get a palindrome (45133544533154).

The spelling of 13120440131023 in words is "thirteen trillion, one hundred twenty billion, four hundred forty million, one hundred thirty-one thousand, twenty-three".