12131117 has 8 divisors (see below), whose sum is σ = 12649824. Its totient is φ = 11623248.

The previous prime is 12131113. The next prime is 12131159. The reversal of 12131117 is 71113121.

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 12131117 - 2² = 12131113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12131095 and 12131104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131113) 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, 383 + ... + 4940.

It is an arithmetic number, because the mean of its divisors is an integer number (1581228).

Almost surely, 2^12131117 is an apocalyptic number.

It is an amenable number.

12131117 is a deficient number, since it is larger than the sum of its proper divisors (518707).

12131117 is an equidigital number, since it uses as much as digits as its factorization.

12131117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5419.

The product of its digits is 42, while the sum is 17.

The square root of 12131117 is about 3482.9753085545. The cubic root of 12131117 is about 229.7736714973.

Adding to 12131117 its reverse (71113121), we get a palindrome (83244238).

The spelling of 12131117 in words is "twelve million, one hundred thirty-one thousand, one hundred seventeen".