131365709 has 2 divisors, whose sum is σ = 131365710. Its totient is φ = 131365708.

The previous prime is 131365697. The next prime is 131365721. The reversal of 131365709 is 907563131.

It is a balanced prime because it is at equal distance from previous prime (131365697) and next prime (131365721).

It can be written as a sum of positive squares in only one way, i.e., 119290084 + 12075625 = 10922^2 + 3475^2 .

It is a cyclic number.

It is not a de Polignac number, because 131365709 - 2¹⁶ = 131300173 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 (131365739) 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, 65682854 + 65682855.

It is an arithmetic number, because the mean of its divisors is an integer number (65682855).

Almost surely, 2^131365709 is an apocalyptic number.

It is an amenable number.

131365709 is a deficient number, since it is larger than the sum of its proper divisors (1).

131365709 is an equidigital number, since it uses as much as digits as its factorization.

131365709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 131365709 is about 11461.4880796518. The cubic root of 131365709 is about 508.3474757569.

The spelling of 131365709 in words is "one hundred thirty-one million, three hundred sixty-five thousand, seven hundred nine".