13812271 has 12 divisors (see below), whose sum is σ = 15282232. Its totient is φ = 12474000.

The previous prime is 13812263. The next prime is 13812287. The reversal of 13812271 is 17221831.

It is a happy number.

13812271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13812271 - 2³ = 13812263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13812571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25261 + ... + 25801.

Almost surely, 2^13812271 is an apocalyptic number.

13812271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13812271 is a deficient number, since it is larger than the sum of its proper divisors (1469961).

13812271 is a wasteful number, since it uses less digits than its factorization.

13812271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774 (or 763 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 13812271 is about 3716.4863782880. The cubic root of 13812271 is about 239.9321046370.

The spelling of 13812271 in words is "thirteen million, eight hundred twelve thousand, two hundred seventy-one".