131109576973 has 2 divisors, whose sum is σ = 131109576974. Its totient is φ = 131109576972.

The previous prime is 131109576911. The next prime is 131109576989. The reversal of 131109576973 is 379675901131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129325105924 + 1784471049 = 359618^2 + 42243^2 .

It is an emirp because it is prime and its reverse (379675901131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131109576973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131109576973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131109576373) 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, 65554788486 + 65554788487.

It is an arithmetic number, because the mean of its divisors is an integer number (65554788487).

Almost surely, 2^131109576973 is an apocalyptic number.

It is an amenable number.

131109576973 is a deficient number, since it is larger than the sum of its proper divisors (1).

131109576973 is an equidigital number, since it uses as much as digits as its factorization.

131109576973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1071630, while the sum is 52.

The spelling of 131109576973 in words is "one hundred thirty-one billion, one hundred nine million, five hundred seventy-six thousand, nine hundred seventy-three".