13215423 has 8 divisors (see below), whose sum is σ = 18976048. Its totient is φ = 8132544.

The previous prime is 13215421. The next prime is 13215427. The reversal of 13215423 is 32451231.

13215423 is digitally balanced in base 3, 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 13215423 - 2¹ = 13215421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13215423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13215421) 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, 169390 + ... + 169467.

It is an arithmetic number, because the mean of its divisors is an integer number (2372006).

Almost surely, 2^13215423 is an apocalyptic number.

13215423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13215423 is a deficient number, since it is larger than the sum of its proper divisors (5760625).

13215423 is a wasteful number, since it uses less digits than its factorization.

13215423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338873.

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

The square root of 13215423 is about 3635.3023258046. The cubic root of 13215423 is about 236.4251588685.

Adding to 13215423 its reverse (32451231), we get a palindrome (45666654).

The spelling of 13215423 in words is "thirteen million, two hundred fifteen thousand, four hundred twenty-three".