13391385 has 32 divisors (see below), whose sum is σ = 24779520. Its totient is φ = 6048768.

The previous prime is 13391353. The next prime is 13391387. The reversal of 13391385 is 58319331.

13391385 is nontrivially palindromic in base 11.

13391385 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13391385 - 2⁵ = 13391353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13391387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8629 + ... + 10061.

It is an arithmetic number, because the mean of its divisors is an integer number (774360).

Almost surely, 2^13391385 is an apocalyptic number.

13391385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13391385 is a deficient number, since it is larger than the sum of its proper divisors (11388135).

13391385 is a wasteful number, since it uses less digits than its factorization.

13391385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537.

The product of its digits is 9720, while the sum is 33.

The square root of 13391385 is about 3659.4241350245. The cubic root of 13391385 is about 237.4698613649.

The spelling of 13391385 in words is "thirteen million, three hundred ninety-one thousand, three hundred eighty-five".