13323215 has 4 divisors (see below), whose sum is σ = 15987864. Its totient is φ = 10658568.

The previous prime is 13323197. The next prime is 13323217. The reversal of 13323215 is 51232331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51232331 = 83 ⋅617257.

It is a cyclic number.

It is not a de Polignac number, because 13323215 - 2¹⁸ = 13061071 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 (13323217) 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, 1332317 + ... + 1332326.

It is an arithmetic number, because the mean of its divisors is an integer number (3996966).

Almost surely, 2^13323215 is an apocalyptic number.

13323215 is a deficient number, since it is larger than the sum of its proper divisors (2664649).

13323215 is an equidigital number, since it uses as much as digits as its factorization.

13323215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664648.

The product of its digits is 540, while the sum is 20.

The square root of 13323215 is about 3650.0979438914. The cubic root of 13323215 is about 237.0662220662.

Adding to 13323215 its reverse (51232331), we get a palindrome (64555546).

The spelling of 13323215 in words is "thirteen million, three hundred twenty-three thousand, two hundred fifteen".