13123524217 has 4 divisors (see below), whose sum is σ = 13123867636. Its totient is φ = 13123180800.

The previous prime is 13123524179. The next prime is 13123524229. The reversal of 13123524217 is 71242532131.

13123524217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 9232135056 + 3891389161 = 96084^2 + 62381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13123524217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13123524247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106008 + ... + 193609.

It is an arithmetic number, because the mean of its divisors is an integer number (3280966909).

Almost surely, 2^13123524217 is an apocalyptic number.

It is an amenable number.

13123524217 is a deficient number, since it is larger than the sum of its proper divisors (343419).

13123524217 is an equidigital number, since it uses as much as digits as its factorization.

13123524217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343418.

The product of its digits is 10080, while the sum is 31.

The spelling of 13123524217 in words is "thirteen billion, one hundred twenty-three million, five hundred twenty-four thousand, two hundred seventeen".