13145321 has 8 divisors (see below), whose sum is σ = 15814080. Its totient is φ = 10674288.

The previous prime is 13145311. The next prime is 13145339. The reversal of 13145321 is 12354131.

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 13145321 - 2⁶ = 13145257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13145293 and 13145302.

It is not an unprimeable number, because it can be changed into a prime (13145311) 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, 49286 + ... + 49551.

It is an arithmetic number, because the mean of its divisors is an integer number (1976760).

Almost surely, 2^13145321 is an apocalyptic number.

It is an amenable number.

13145321 is a deficient number, since it is larger than the sum of its proper divisors (2668759).

13145321 is an equidigital number, since it uses as much as digits as its factorization.

13145321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98863.

The product of its digits is 360, while the sum is 20.

The square root of 13145321 is about 3625.6476662798. The cubic root of 13145321 is about 236.0063737147.

Adding to 13145321 its reverse (12354131), we get a palindrome (25499452).

The spelling of 13145321 in words is "thirteen million, one hundred forty-five thousand, three hundred twenty-one".