131333233321909 has 2 divisors, whose sum is σ = 131333233321910. Its totient is φ = 131333233321908.

The previous prime is 131333233321861. The next prime is 131333233321949. The reversal of 131333233321909 is 909123332333131.

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., 69531466133809 + 61801767188100 = 8338553^2 + 7861410^2 .

It is a cyclic number.

It is not a de Polignac number, because 131333233321909 - 2⁷ = 131333233321781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131333233321949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65666616660954 + 65666616660955.

It is an arithmetic number, because the mean of its divisors is an integer number (65666616660955).

Almost surely, 2^{131333233321909} is an apocalyptic number.

It is an amenable number.

131333233321909 is a deficient number, since it is larger than the sum of its proper divisors (1).

131333233321909 is an equidigital number, since it uses as much as digits as its factorization.

131333233321909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 708588, while the sum is 46.

The spelling of 131333233321909 in words is "one hundred thirty-one trillion, three hundred thirty-three billion, two hundred thirty-three million, three hundred twenty-one thousand, nine hundred nine".