13230309 has 4 divisors (see below), whose sum is σ = 17640416. Its totient is φ = 8820204.

The previous prime is 13230307. The next prime is 13230341. The reversal of 13230309 is 90303231.

13230309 is digitally balanced in base 2, base 3 and base 4, because in such bases 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13230309 - 2¹ = 13230307 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 (13230307) 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, 2205049 + ... + 2205054.

It is an arithmetic number, because the mean of its divisors is an integer number (4410104).

Almost surely, 2^13230309 is an apocalyptic number.

It is an amenable number.

13230309 is a deficient number, since it is larger than the sum of its proper divisors (4410107).

13230309 is an equidigital number, since it uses as much as digits as its factorization.

13230309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410106.

The product of its (nonzero) digits is 486, while the sum is 21.

The square root of 13230309 is about 3637.3491721307. The cubic root of 13230309 is about 236.5138962047.

The spelling of 13230309 in words is "thirteen million, two hundred thirty thousand, three hundred nine".