13243215 has 8 divisors (see below), whose sum is σ = 21189168. Its totient is φ = 7063040.

The previous prime is 13243213. The next prime is 13243253. The reversal of 13243215 is 51234231.

13243215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13243215 - 2¹ = 13243213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13243191 and 13243200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13243211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441426 + ... + 441455.

It is an arithmetic number, because the mean of its divisors is an integer number (2648646).

Almost surely, 2^13243215 is an apocalyptic number.

13243215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13243215 is a deficient number, since it is larger than the sum of its proper divisors (7945953).

13243215 is an equidigital number, since it uses as much as digits as its factorization.

13243215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882889.

The product of its digits is 720, while the sum is 21.

The square root of 13243215 is about 3639.1228338708. The cubic root of 13243215 is about 236.5907766550.

Adding to 13243215 its reverse (51234231), we get a palindrome (64477446).

The spelling of 13243215 in words is "thirteen million, two hundred forty-three thousand, two hundred fifteen".