13480321 has 4 divisors (see below), whose sum is σ = 13844692. Its totient is φ = 13115952.

The previous prime is 13480309. The next prime is 13480339. The reversal of 13480321 is 12308431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12308431 = 173 ⋅71147.

It can be written as a sum of positive squares in 2 ways, for example, as 6431296 + 7049025 = 2536^2 + 2655^2 .

It is a cyclic number.

It is not a de Polignac number, because 13480321 - 2⁵ = 13480289 is a prime.

It is a super-3 number, since 3×13480321³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13480292 and 13480301.

It is not an unprimeable number, because it can be changed into a prime (13480301) 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 3 ways as a sum of consecutive naturals, for example, 182130 + ... + 182203.

It is an arithmetic number, because the mean of its divisors is an integer number (3461173).

Almost surely, 2^13480321 is an apocalyptic number.

It is an amenable number.

13480321 is a deficient number, since it is larger than the sum of its proper divisors (364371).

13480321 is an equidigital number, since it uses as much as digits as its factorization.

13480321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364370.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 13480321 is about 3671.5556648375. Note that the first 3 decimals coincide. The cubic root of 13480321 is about 237.9944035122.

Adding to 13480321 its reverse (12308431), we get a palindrome (25788752).

The spelling of 13480321 in words is "thirteen million, four hundred eighty thousand, three hundred twenty-one".