12131297 has 2 divisors, whose sum is σ = 12131298. Its totient is φ = 12131296.

The previous prime is 12131293. The next prime is 12131303. The reversal of 12131297 is 79213121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10182481 + 1948816 = 3191^2 + 1396^2 .

It is a cyclic number.

It is not a de Polignac number, because 12131297 - 2² = 12131293 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12131293) 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 as a sum of consecutive naturals, namely, 6065648 + 6065649.

It is an arithmetic number, because the mean of its divisors is an integer number (6065649).

Almost surely, 2^12131297 is an apocalyptic number.

It is an amenable number.

12131297 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131297 is an equidigital number, since it uses as much as digits as its factorization.

12131297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756, while the sum is 26.

The square root of 12131297 is about 3483.0011484351. The cubic root of 12131297 is about 229.7748079427.

The spelling of 12131297 in words is "twelve million, one hundred thirty-one thousand, two hundred ninety-seven".