12331161 has 12 divisors (see below), whose sum is σ = 17949360. Its totient is φ = 8157240.

The previous prime is 12331157. The next prime is 12331181. The reversal of 12331161 is 16113321.

It is not a de Polignac number, because 12331161 - 2² = 12331157 is a prime.

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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4051 + ... + 6408.

It is an arithmetic number, because the mean of its divisors is an integer number (1495780).

Almost surely, 2^12331161 is an apocalyptic number.

It is an amenable number.

12331161 is a deficient number, since it is larger than the sum of its proper divisors (5618199).

12331161 is a wasteful number, since it uses less digits than its factorization.

12331161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10596 (or 10593 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 12331161 is about 3511.5752875312. The cubic root of 12331161 is about 231.0297932000.

Adding to 12331161 its reverse (16113321), we get a palindrome (28444482).

The spelling of 12331161 in words is "twelve million, three hundred thirty-one thousand, one hundred sixty-one".