131977003673 has 2 divisors, whose sum is σ = 131977003674. Its totient is φ = 131977003672.

The previous prime is 131977003661. The next prime is 131977003693. The reversal of 131977003673 is 376300779131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70099446169 + 61877557504 = 264763^2 + 248752^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131977003673 is a prime.

It is not a weakly prime, because it can be changed into another prime (131977003643) 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, 65988501836 + 65988501837.

It is an arithmetic number, because the mean of its divisors is an integer number (65988501837).

Almost surely, 2^131977003673 is an apocalyptic number.

It is an amenable number.

131977003673 is a deficient number, since it is larger than the sum of its proper divisors (1).

131977003673 is an equidigital number, since it uses as much as digits as its factorization.

131977003673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 500094, while the sum is 47.

The spelling of 131977003673 in words is "one hundred thirty-one billion, nine hundred seventy-seven million, three thousand, six hundred seventy-three".