13321499 has 4 divisors (see below), whose sum is σ = 13343640. Its totient is φ = 13299360.

The previous prime is 13321493. The next prime is 13321507. The reversal of 13321499 is 99412331.

13321499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99412331 = 41 ⋅2424691.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13321499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13321493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10142 + ... + 11379.

It is an arithmetic number, because the mean of its divisors is an integer number (3335910).

Almost surely, 2^13321499 is an apocalyptic number.

13321499 is a deficient number, since it is larger than the sum of its proper divisors (22141).

13321499 is an equidigital number, since it uses as much as digits as its factorization.

13321499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22140.

The product of its digits is 5832, while the sum is 32.

The square root of 13321499 is about 3649.8628741365. The cubic root of 13321499 is about 237.0560437646.

The spelling of 13321499 in words is "thirteen million, three hundred twenty-one thousand, four hundred ninety-nine".