13520032223 has 4 divisors (see below), whose sum is σ = 13548258240. Its totient is φ = 13491806208.

The previous prime is 13520032193. The next prime is 13520032277. The reversal of 13520032223 is 32223002531.

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 13520032223 - 2²² = 13515837919 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 (13520032283) 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, 14112290 + ... + 14113247.

It is an arithmetic number, because the mean of its divisors is an integer number (3387064560).

Almost surely, 2^13520032223 is an apocalyptic number.

13520032223 is a deficient number, since it is larger than the sum of its proper divisors (28226017).

13520032223 is an equidigital number, since it uses as much as digits as its factorization.

13520032223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28226016.

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 13520032223 its reverse (32223002531), we get a palindrome (45743034754).

The spelling of 13520032223 in words is "thirteen billion, five hundred twenty million, thirty-two thousand, two hundred twenty-three".