131376444169 has 2 divisors, whose sum is σ = 131376444170. Its totient is φ = 131376444168.

The previous prime is 131376444151. The next prime is 131376444179. The reversal of 131376444169 is 961444673131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131272159225 + 104284944 = 362315^2 + 10212^2 .

It is an emirp because it is prime and its reverse (961444673131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131376444169 - 2⁵ = 131376444137 is a prime.

It is a super-2 number, since 2×131376444169² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131376444109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65688222084 + 65688222085.

It is an arithmetic number, because the mean of its divisors is an integer number (65688222085).

Almost surely, 2^131376444169 is an apocalyptic number.

It is an amenable number.

131376444169 is a deficient number, since it is larger than the sum of its proper divisors (1).

131376444169 is an equidigital number, since it uses as much as digits as its factorization.

131376444169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 49.

The spelling of 131376444169 in words is "one hundred thirty-one billion, three hundred seventy-six million, four hundred forty-four thousand, one hundred sixty-nine".