13305391 has 8 divisors (see below), whose sum is σ = 14603904. Its totient is φ = 12021720.

The previous prime is 13305389. The next prime is 13305421. The reversal of 13305391 is 19350331.

13305391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13305391 - 2¹ = 13305389 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 (13305091) 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, 1785 + ... + 5458.

It is an arithmetic number, because the mean of its divisors is an integer number (1825488).

Almost surely, 2^13305391 is an apocalyptic number.

13305391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13305391 is a deficient number, since it is larger than the sum of its proper divisors (1298513).

13305391 is a wasteful number, since it uses less digits than its factorization.

13305391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7421.

The product of its (nonzero) digits is 1215, while the sum is 25.

The square root of 13305391 is about 3647.6555484311. The cubic root of 13305391 is about 236.9604579534.

The spelling of 13305391 in words is "thirteen million, three hundred five thousand, three hundred ninety-one".