131168629 has 2 divisors, whose sum is σ = 131168630. Its totient is φ = 131168628.

The previous prime is 131168603. The next prime is 131168669. The reversal of 131168629 is 926861131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80730225 + 50438404 = 8985^2 + 7102^2 .

It is a cyclic number.

It is not a de Polignac number, because 131168629 - 2²¹ = 129071477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131168669) 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, 65584314 + 65584315.

It is an arithmetic number, because the mean of its divisors is an integer number (65584315).

Almost surely, 2^131168629 is an apocalyptic number.

It is an amenable number.

131168629 is a deficient number, since it is larger than the sum of its proper divisors (1).

131168629 is an equidigital number, since it uses as much as digits as its factorization.

131168629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 37.

The square root of 131168629 is about 11452.8873652018. The cubic root of 131168629 is about 508.0931342355.

The spelling of 131168629 in words is "one hundred thirty-one million, one hundred sixty-eight thousand, six hundred twenty-nine".