131313697 has 2 divisors, whose sum is σ = 131313698. Its totient is φ = 131313696.

The previous prime is 131313673. The next prime is 131313709. The reversal of 131313697 is 796313131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77862976 + 53450721 = 8824^2 + 7311^2 .

It is an emirp because it is prime and its reverse (796313131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131313697 is a prime.

It is not a weakly prime, because it can be changed into another prime (131313607) 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, 65656848 + 65656849.

It is an arithmetic number, because the mean of its divisors is an integer number (65656849).

Almost surely, 2^131313697 is an apocalyptic number.

It is an amenable number.

131313697 is a deficient number, since it is larger than the sum of its proper divisors (1).

131313697 is an equidigital number, since it uses as much as digits as its factorization.

131313697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 34.

The square root of 131313697 is about 11459.2188651758. The cubic root of 131313697 is about 508.2803764117.

The spelling of 131313697 in words is "one hundred thirty-one million, three hundred thirteen thousand, six hundred ninety-seven".