13531385 has 8 divisors (see below), whose sum is σ = 18557376. Its totient is φ = 9278640.

The previous prime is 13531373. The next prime is 13531391. The reversal of 13531385 is 58313531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13531385 - 2⁸ = 13531129 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193271 + ... + 193340.

It is an arithmetic number, because the mean of its divisors is an integer number (2319672).

Almost surely, 2^13531385 is an apocalyptic number.

It is an amenable number.

13531385 is a deficient number, since it is larger than the sum of its proper divisors (5025991).

13531385 is an equidigital number, since it uses as much as digits as its factorization.

13531385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386623.

The product of its digits is 5400, while the sum is 29.

The square root of 13531385 is about 3678.5030922918. The cubic root of 13531385 is about 238.2945356616.

The spelling of 13531385 in words is "thirteen million, five hundred thirty-one thousand, three hundred eighty-five".