13240571 has 4 divisors (see below), whose sum is σ = 13816272. Its totient is φ = 12664872.

The previous prime is 13240553. The next prime is 13240573. The reversal of 13240571 is 17504231.

13240571 is digitally balanced in base 2, because in such base 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 an emirpimes, since its reverse is a distinct semiprime: 17504231 = 179 ⋅97789.

It is a cyclic number.

It is not a de Polignac number, because 13240571 - 2¹⁴ = 13224187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 575677 = 13240571 / (1 + 3 + 2 + 4 + 0 + 5 + 7 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13240573) 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, 287816 + ... + 287861.

It is an arithmetic number, because the mean of its divisors is an integer number (3454068).

Almost surely, 2^13240571 is an apocalyptic number.

13240571 is a deficient number, since it is larger than the sum of its proper divisors (575701).

13240571 is an equidigital number, since it uses as much as digits as its factorization.

13240571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575700.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 13240571 is about 3638.7595413822. The cubic root of 13240571 is about 236.5750305378.

The spelling of 13240571 in words is "thirteen million, two hundred forty thousand, five hundred seventy-one".