13121311113023 has 4 divisors (see below), whose sum is σ = 13135079541168. Its totient is φ = 13107542684880.

The previous prime is 13121311113007. The next prime is 13121311113067. The reversal of 13121311113023 is 32031111312131.

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 13121311113023 - 2⁴ = 13121311113007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13121311113023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121311113073) 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, 6884212643 + ... + 6884214548.

It is an arithmetic number, because the mean of its divisors is an integer number (3283769885292).

Almost surely, 2^{13121311113023} is an apocalyptic number.

13121311113023 is a deficient number, since it is larger than the sum of its proper divisors (13768428145).

13121311113023 is an equidigital number, since it uses as much as digits as its factorization.

13121311113023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13768428144.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 13121311113023 its reverse (32031111312131), we get a palindrome (45152422425154).

The spelling of 13121311113023 in words is "thirteen trillion, one hundred twenty-one billion, three hundred eleven million, one hundred thirteen thousand, twenty-three".