131768647 has 2 divisors, whose sum is σ = 131768648. Its totient is φ = 131768646.

The previous prime is 131768579. The next prime is 131768669. The reversal of 131768647 is 746867131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131768647 - 2⁷ = 131768519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131768677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65884323 + 65884324.

It is an arithmetic number, because the mean of its divisors is an integer number (65884324).

Almost surely, 2^131768647 is an apocalyptic number.

131768647 is a deficient number, since it is larger than the sum of its proper divisors (1).

131768647 is an equidigital number, since it uses as much as digits as its factorization.

131768647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The square root of 131768647 is about 11479.0525305881. The cubic root of 131768647 is about 508.8666966031.

The spelling of 131768647 in words is "one hundred thirty-one million, seven hundred sixty-eight thousand, six hundred forty-seven".