13321345 has 8 divisors (see below), whose sum is σ = 16093800. Its totient is φ = 10584960.

The previous prime is 13321339. The next prime is 13321349. The reversal of 13321345 is 54312331.

It can be written as a sum of positive squares in 4 ways, for example, as 20736 + 13300609 = 144^2 + 3647^2 .

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

It is not a de Polignac number, because 13321345 - 2⁵ = 13321313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13321349) 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, 8196 + ... + 9685.

It is an arithmetic number, because the mean of its divisors is an integer number (2011725).

Almost surely, 2^13321345 is an apocalyptic number.

It is an amenable number.

13321345 is a deficient number, since it is larger than the sum of its proper divisors (2772455).

13321345 is a wasteful number, since it uses less digits than its factorization.

13321345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18035.

The product of its digits is 1080, while the sum is 22.

The square root of 13321345 is about 3649.8417773925. The cubic root of 13321345 is about 237.0551302845.

Adding to 13321345 its reverse (54312331), we get a palindrome (67633676).

The spelling of 13321345 in words is "thirteen million, three hundred twenty-one thousand, three hundred forty-five".