131663859 has 16 divisors (see below), whose sum is σ = 177132288. Its totient is φ = 86990112.

The previous prime is 131663837. The next prime is 131663867. The reversal of 131663859 is 958366131.

It is a happy number.

It is not a de Polignac number, because 131663859 - 2⁹ = 131663347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131663859.

It is not an unprimeable number, because it can be changed into a prime (131663809) 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, 270114 + ... + 270600.

It is an arithmetic number, because the mean of its divisors is an integer number (11070768).

Almost surely, 2^131663859 is an apocalyptic number.

131663859 is a deficient number, since it is larger than the sum of its proper divisors (45468429).

131663859 is a wasteful number, since it uses less digits than its factorization.

131663859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114.

The product of its digits is 116640, while the sum is 42.

The square root of 131663859 is about 11474.4873088082. The cubic root of 131663859 is about 508.7317700587.

The spelling of 131663859 in words is "one hundred thirty-one million, six hundred sixty-three thousand, eight hundred fifty-nine".