131310317 has 2 divisors, whose sum is σ = 131310318. Its totient is φ = 131310316.

The previous prime is 131310307. The next prime is 131310323. The reversal of 131310317 is 713013131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104571076 + 26739241 = 10226^2 + 5171^2 .

It is a cyclic number.

It is not a de Polignac number, because 131310317 - 2⁸ = 131310061 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131310307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65655158 + 65655159.

It is an arithmetic number, because the mean of its divisors is an integer number (65655159).

Almost surely, 2^131310317 is an apocalyptic number.

It is an amenable number.

131310317 is a deficient number, since it is larger than the sum of its proper divisors (1).

131310317 is an equidigital number, since it uses as much as digits as its factorization.

131310317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189, while the sum is 20.

The square root of 131310317 is about 11459.0713847153. The cubic root of 131310317 is about 508.2760153474.

Adding to 131310317 its reverse (713013131), we get a palindrome (844323448).

The spelling of 131310317 in words is "one hundred thirty-one million, three hundred ten thousand, three hundred seventeen".