13245320423 has 4 divisors (see below), whose sum is σ = 13702055640. Its totient is φ = 12788585208.

The previous prime is 13245320411. The next prime is 13245320453. The reversal of 13245320423 is 32402354231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32402354231 = 13 ⋅2492488787.

It is a cyclic number.

It is not a de Polignac number, because 13245320423 - 2⁸ = 13245320167 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 456735187 = 13245320423 / (1 + 3 + 2 + 4 + 5 + 3 + 2 + 0 + 4 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13245320453) 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, 228367565 + ... + 228367622.

It is an arithmetic number, because the mean of its divisors is an integer number (3425513910).

Almost surely, 2^13245320423 is an apocalyptic number.

13245320423 is a deficient number, since it is larger than the sum of its proper divisors (456735217).

13245320423 is an equidigital number, since it uses as much as digits as its factorization.

13245320423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456735216.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 13245320423 its reverse (32402354231), we get a palindrome (45647674654).

The spelling of 13245320423 in words is "thirteen billion, two hundred forty-five million, three hundred twenty thousand, four hundred twenty-three".