12031071 has 8 divisors (see below), whose sum is σ = 17275440. Its totient is φ = 7403712.

The previous prime is 12031051. The next prime is 12031079. The reversal of 12031071 is 17013021.

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

It is not a de Polignac number, because 12031071 - 2⁵ = 12031039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12031071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031079) 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, 154206 + ... + 154283.

It is an arithmetic number, because the mean of its divisors is an integer number (2159430).

Almost surely, 2^12031071 is an apocalyptic number.

12031071 is a deficient number, since it is larger than the sum of its proper divisors (5244369).

12031071 is a wasteful number, since it uses less digits than its factorization.

12031071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308505.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 12031071 is about 3468.5834284330. The cubic root of 12031071 is about 229.1402749699.

Adding to 12031071 its reverse (17013021), we get a palindrome (29044092).

The spelling of 12031071 in words is "twelve million, thirty-one thousand, seventy-one".