131288087 has 8 divisors (see below), whose sum is σ = 150883200. Its totient is φ = 111902904.

The previous prime is 131288077. The next prime is 131288147. The reversal of 131288087 is 780882131.

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 131288087 - 2⁸ = 131287831 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131288087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131288077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51137 + ... + 53642.

It is an arithmetic number, because the mean of its divisors is an integer number (18860400).

Almost surely, 2^131288087 is an apocalyptic number.

131288087 is a deficient number, since it is larger than the sum of its proper divisors (19595113).

131288087 is a wasteful number, since it uses less digits than its factorization.

131288087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104965.

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 131288087 is about 11458.1013697733. The cubic root of 131288087 is about 508.2473310984.

The spelling of 131288087 in words is "one hundred thirty-one million, two hundred eighty-eight thousand, eighty-seven".