131320303211809 has 2 divisors, whose sum is σ = 131320303211810. Its totient is φ = 131320303211808.

The previous prime is 131320303211743. The next prime is 131320303211813. The reversal of 131320303211809 is 908112303023131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71629613511184 + 59690689700625 = 8463428^2 + 7725975^2 .

It is a cyclic number.

It is not a de Polignac number, because 131320303211809 - 2⁹ = 131320303211297 is a prime.

It is a super-2 number, since 2×131320303211809² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131320303211819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65660151605904 + 65660151605905.

It is an arithmetic number, because the mean of its divisors is an integer number (65660151605905).

Almost surely, 2^{131320303211809} is an apocalyptic number.

It is an amenable number.

131320303211809 is a deficient number, since it is larger than the sum of its proper divisors (1).

131320303211809 is an equidigital number, since it uses as much as digits as its factorization.

131320303211809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 131320303211809 in words is "one hundred thirty-one trillion, three hundred twenty billion, three hundred three million, two hundred eleven thousand, eight hundred nine".