131766137 has 2 divisors, whose sum is σ = 131766138. Its totient is φ = 131766136.

The previous prime is 131766127. The next prime is 131766157. The reversal of 131766137 is 731667131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88153321 + 43612816 = 9389^2 + 6604^2 .

It is a cyclic number.

It is not a de Polignac number, because 131766137 - 2²⁴ = 114988921 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 131766097 and 131766106.

It is not a weakly prime, because it can be changed into another prime (131766127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65883068 + 65883069.

It is an arithmetic number, because the mean of its divisors is an integer number (65883069).

Almost surely, 2^131766137 is an apocalyptic number.

It is an amenable number.

131766137 is a deficient number, since it is larger than the sum of its proper divisors (1).

131766137 is an equidigital number, since it uses as much as digits as its factorization.

131766137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 35.

The square root of 131766137 is about 11478.9432004867. The cubic root of 131766137 is about 508.8634655272.

The spelling of 131766137 in words is "one hundred thirty-one million, seven hundred sixty-six thousand, one hundred thirty-seven".