13213009 has 8 divisors (see below), whose sum is σ = 13709160. Its totient is φ = 12719616.

The previous prime is 13213001. The next prime is 13213043. The reversal of 13213009 is 90031231.

13213009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5107600 + 8105409 = 2260^2 + 2847^2 .

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 13213009 - 2³ = 13213001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13213001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19179 + ... + 19855.

It is an arithmetic number, because the mean of its divisors is an integer number (1713645).

Almost surely, 2^13213009 is an apocalyptic number.

It is an amenable number.

13213009 is a deficient number, since it is larger than the sum of its proper divisors (496151).

13213009 is an equidigital number, since it uses as much as digits as its factorization.

13213009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 13213009 is about 3634.9702887369. The cubic root of 13213009 is about 236.4107624297.

The spelling of 13213009 in words is "thirteen million, two hundred thirteen thousand, nine".