13223452513 has 4 divisors (see below), whose sum is σ = 13225850560. Its totient is φ = 13221054468.

The previous prime is 13223452511. The next prime is 13223452523. The reversal of 13223452513 is 31525432231.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31525432231 = 24481 ⋅1287751.

It is a cyclic number.

It is not a de Polignac number, because 13223452513 - 2¹ = 13223452511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13223452511) 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, 1190733 + ... + 1201786.

It is an arithmetic number, because the mean of its divisors is an integer number (3306462640).

Almost surely, 2^13223452513 is an apocalyptic number.

It is an amenable number.

13223452513 is a deficient number, since it is larger than the sum of its proper divisors (2398047).

13223452513 is an equidigital number, since it uses as much as digits as its factorization.

13223452513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398046.

The product of its digits is 21600, while the sum is 31.

Adding to 13223452513 its reverse (31525432231), we get a palindrome (44748884744).

The spelling of 13223452513 in words is "thirteen billion, two hundred twenty-three million, four hundred fifty-two thousand, five hundred thirteen".