12013871 has 8 divisors (see below), whose sum is σ = 12764400. Its totient is φ = 11275200.

The previous prime is 12013867. The next prime is 12013873. The reversal of 12013871 is 17831021.

It is a happy number.

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 12013871 - 2² = 12013867 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 (12013873) 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, 830 + ... + 4971.

It is an arithmetic number, because the mean of its divisors is an integer number (1595550).

Almost surely, 2^12013871 is an apocalyptic number.

12013871 is a deficient number, since it is larger than the sum of its proper divisors (750529).

12013871 is a wasteful number, since it uses less digits than its factorization.

12013871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5929.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 12013871 is about 3466.1031433008. The cubic root of 12013871 is about 229.0310274950.

Adding to 12013871 its reverse (17831021), we get a palindrome (29844892).

The spelling of 12013871 in words is "twelve million, thirteen thousand, eight hundred seventy-one".