131665232585 has 8 divisors (see below), whose sum is σ = 158000375040. Its totient is φ = 105330788784.

The previous prime is 131665232561. The next prime is 131665232593. The reversal of 131665232585 is 585232566131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131665232585 - 2¹⁰ = 131665231561 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430664 + ... + 669926.

It is an arithmetic number, because the mean of its divisors is an integer number (19750046880).

Almost surely, 2^131665232585 is an apocalyptic number.

It is an amenable number.

131665232585 is a deficient number, since it is larger than the sum of its proper divisors (26335142455).

131665232585 is a wasteful number, since it uses less digits than its factorization.

131665232585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349327.

The product of its digits is 1296000, while the sum is 47.

The spelling of 131665232585 in words is "one hundred thirty-one billion, six hundred sixty-five million, two hundred thirty-two thousand, five hundred eighty-five".