13002321 has 4 divisors (see below), whose sum is σ = 17336432. Its totient is φ = 8668212.

The previous prime is 13002313. The next prime is 13002323. The reversal of 13002321 is 12320031.

It is a happy number.

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: 12320031 = 3 ⋅4106677.

It is not a de Polignac number, because 13002321 - 2³ = 13002313 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 13002297 and 13002306.

It is not an unprimeable number, because it can be changed into a prime (13002323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2167051 + ... + 2167056.

It is an arithmetic number, because the mean of its divisors is an integer number (4334108).

Almost surely, 2^13002321 is an apocalyptic number.

It is an amenable number.

13002321 is a deficient number, since it is larger than the sum of its proper divisors (4334111).

13002321 is an equidigital number, since it uses as much as digits as its factorization.

13002321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4334110.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 13002321 is about 3605.8731258878. The cubic root of 13002321 is about 235.1474613953.

Adding to 13002321 its reverse (12320031), we get a palindrome (25322352).

The spelling of 13002321 in words is "thirteen million, two thousand, three hundred twenty-one".