13407321 has 8 divisors (see below), whose sum is σ = 18653760. Its totient is φ = 8549552.

The previous prime is 13407319. The next prime is 13407323. The reversal of 13407321 is 12370431.

It is an interprime number because it is at equal distance from previous prime (13407319) and next prime (13407323).

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

It is a cyclic number.

It is not a de Polignac number, because 13407321 - 2¹ = 13407319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13407323) 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, 97086 + ... + 97223.

It is an arithmetic number, because the mean of its divisors is an integer number (2331720).

Almost surely, 2^13407321 is an apocalyptic number.

It is an amenable number.

13407321 is a deficient number, since it is larger than the sum of its proper divisors (5246439).

13407321 is a wasteful number, since it uses less digits than its factorization.

13407321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194335.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 13407321 is about 3661.6008793969. The cubic root of 13407321 is about 237.5640218908.

Adding to 13407321 its reverse (12370431), we get a palindrome (25777752).

The spelling of 13407321 in words is "thirteen million, four hundred seven thousand, three hundred twenty-one".