131330071309 has 2 divisors, whose sum is σ = 131330071310. Its totient is φ = 131330071308.

The previous prime is 131330071291. The next prime is 131330071381. The reversal of 131330071309 is 903170033131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112843590084 + 18486481225 = 335922^2 + 135965^2 .

It is an emirp because it is prime and its reverse (903170033131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131330071309 - 2¹⁷ = 131329940237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131330071409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65665035654 + 65665035655.

It is an arithmetic number, because the mean of its divisors is an integer number (65665035655).

Almost surely, 2^131330071309 is an apocalyptic number.

It is an amenable number.

131330071309 is a deficient number, since it is larger than the sum of its proper divisors (1).

131330071309 is an equidigital number, since it uses as much as digits as its factorization.

131330071309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 31.

The spelling of 131330071309 in words is "one hundred thirty-one billion, three hundred thirty million, seventy-one thousand, three hundred nine".