13217871 has 8 divisors (see below), whose sum is σ = 17642160. Its totient is φ = 8802752.

The previous prime is 13217861. The next prime is 13217903. The reversal of 13217871 is 17871231.

13217871 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 13217871 - 2⁵ = 13217839 is a prime.

It is a super-2 number, since 2×13217871² = 349424227545282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13217821) 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, 2515 + ... + 5723.

It is an arithmetic number, because the mean of its divisors is an integer number (2205270).

Almost surely, 2^13217871 is an apocalyptic number.

13217871 is a deficient number, since it is larger than the sum of its proper divisors (4424289).

13217871 is a wasteful number, since it uses less digits than its factorization.

13217871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4585.

The product of its digits is 2352, while the sum is 30.

The square root of 13217871 is about 3635.6390084826. The cubic root of 13217871 is about 236.4397562839.

The spelling of 13217871 in words is "thirteen million, two hundred seventeen thousand, eight hundred seventy-one".