12331191 has 8 divisors (see below), whose sum is σ = 16604784. Its totient is φ = 8139200.

The previous prime is 12331183. The next prime is 12331213. The reversal of 12331191 is 19113321.

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 12331191 - 2³ = 12331183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20046 + ... + 20651.

It is an arithmetic number, because the mean of its divisors is an integer number (2075598).

Almost surely, 2^12331191 is an apocalyptic number.

12331191 is a deficient number, since it is larger than the sum of its proper divisors (4273593).

12331191 is a wasteful number, since it uses less digits than its factorization.

12331191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40801.

The product of its digits is 162, while the sum is 21.

The square root of 12331191 is about 3511.5795591158. The cubic root of 12331191 is about 231.0299805543.

The spelling of 12331191 in words is "twelve million, three hundred thirty-one thousand, one hundred ninety-one".