13320999 has 24 divisors (see below), whose sum is σ = 19997120. Its totient is φ = 8538048.

The previous prime is 13320977. The next prime is 13321003. The reversal of 13320999 is 99902331.

13320999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13320999 - 2¹¹ = 13318951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320959) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36114 + ... + 36480.

Almost surely, 2^13320999 is an apocalyptic number.

13320999 is a deficient number, since it is larger than the sum of its proper divisors (6676121).

13320999 is a wasteful number, since it uses less digits than its factorization.

13320999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 13320999 is about 3649.7943777698. The cubic root of 13320999 is about 237.0530778945.

The spelling of 13320999 in words is "thirteen million, three hundred twenty thousand, nine hundred ninety-nine".