131766157 has 2 divisors, whose sum is σ = 131766158. Its totient is φ = 131766156.

The previous prime is 131766137. The next prime is 131766179. The reversal of 131766157 is 751667131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121132036 + 10634121 = 11006^2 + 3261^2 .

It is a cyclic number.

It is not a de Polignac number, because 131766157 - 2⁷ = 131766029 is a prime.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65883078 + 65883079.

It is an arithmetic number, because the mean of its divisors is an integer number (65883079).

Almost surely, 2^131766157 is an apocalyptic number.

It is an amenable number.

131766157 is a deficient number, since it is larger than the sum of its proper divisors (1).

131766157 is an equidigital number, since it uses as much as digits as its factorization.

131766157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 37.

The square root of 131766157 is about 11478.9440716470. The cubic root of 131766157 is about 508.8634912729.

The spelling of 131766157 in words is "one hundred thirty-one million, seven hundred sixty-six thousand, one hundred fifty-seven".