13440323 has 8 divisors (see below), whose sum is σ = 14748048. Its totient is φ = 12171744.

The previous prime is 13440307. The next prime is 13440341. The reversal of 13440323 is 32304431.

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

It is not a de Polignac number, because 13440323 - 2⁴ = 13440307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13440295 and 13440304.

It is not an unprimeable number, because it can be changed into a prime (13442323) 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 7 ways as a sum of consecutive naturals, for example, 9065 + ... + 10442.

It is an arithmetic number, because the mean of its divisors is an integer number (1843506).

Almost surely, 2^13440323 is an apocalyptic number.

13440323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13440323 is a deficient number, since it is larger than the sum of its proper divisors (1307725).

13440323 is a wasteful number, since it uses less digits than its factorization.

13440323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19573.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 13440323 is about 3666.1046084366. The cubic root of 13440323 is about 237.7587827449.

Adding to 13440323 its reverse (32304431), we get a palindrome (45744754).

The spelling of 13440323 in words is "thirteen million, four hundred forty thousand, three hundred twenty-three".