131697759 has 16 divisors (see below), whose sum is σ = 195713280. Its totient is φ = 78284160.

The previous prime is 131697749. The next prime is 131697791. The reversal of 131697759 is 957796131.

It is not a de Polignac number, because 131697759 - 2⁴ = 131697743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131697749) 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 in 15 ways as a sum of consecutive naturals, for example, 66987 + ... + 68924.

It is an arithmetic number, because the mean of its divisors is an integer number (12232080).

Almost surely, 2^131697759 is an apocalyptic number.

131697759 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

131697759 is a deficient number, since it is larger than the sum of its proper divisors (64015521).

131697759 is a wasteful number, since it uses less digits than its factorization.

131697759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135950.

The product of its digits is 357210, while the sum is 48.

The square root of 131697759 is about 11475.9644039183. The cubic root of 131697759 is about 508.7754280203.

The spelling of 131697759 in words is "one hundred thirty-one million, six hundred ninety-seven thousand, seven hundred fifty-nine".