13211871 has 8 divisors (see below), whose sum is σ = 17721984. Its totient is φ = 8754840.

The previous prime is 13211843. The next prime is 13211899. The reversal of 13211871 is 17811231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13211843) and next prime (13211899).

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

It is not a de Polignac number, because 13211871 - 2¹⁴ = 13195487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13211801) 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, 12685 + ... + 13686.

It is an arithmetic number, because the mean of its divisors is an integer number (2215248).

Almost surely, 2^13211871 is an apocalyptic number.

13211871 is a deficient number, since it is larger than the sum of its proper divisors (4510113).

13211871 is a wasteful number, since it uses less digits than its factorization.

13211871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26541.

The product of its digits is 336, while the sum is 24.

The square root of 13211871 is about 3634.8137503867. The cubic root of 13211871 is about 236.4039750993.

The spelling of 13211871 in words is "thirteen million, two hundred eleven thousand, eight hundred seventy-one".