131109078673 has 2 divisors, whose sum is σ = 131109078674. Its totient is φ = 131109078672.

The previous prime is 131109078671. The next prime is 131109078679. The reversal of 131109078673 is 376870901131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105198381649 + 25910697024 = 324343^2 + 160968^2 .

It is a cyclic number.

It is not a de Polignac number, because 131109078673 - 2¹ = 131109078671 is a prime.

It is a super-4 number, since 4×131109078673⁴ (a number of 46 digits) contains 4444 as substring.

Together with 131109078671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (131109078671) 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, 65554539336 + 65554539337.

It is an arithmetic number, because the mean of its divisors is an integer number (65554539337).

Almost surely, 2^131109078673 is an apocalyptic number.

It is an amenable number.

131109078673 is a deficient number, since it is larger than the sum of its proper divisors (1).

131109078673 is an equidigital number, since it uses as much as digits as its factorization.

131109078673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 131109078673 in words is "one hundred thirty-one billion, one hundred nine million, seventy-eight thousand, six hundred seventy-three".