131566995 has 96 divisors (see below), whose sum is σ = 280350720. Its totient is φ = 55710720.

The previous prime is 131566993. The next prime is 131567021. The reversal of 131566995 is 599665131.

It is not a de Polignac number, because 131566995 - 2¹ = 131566993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 131566995.

It is not an unprimeable number, because it can be changed into a prime (131566993) 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 95 ways as a sum of consecutive naturals, for example, 422890 + ... + 423200.

It is an arithmetic number, because the mean of its divisors is an integer number (2920320).

Almost surely, 2^131566995 is an apocalyptic number.

131566995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131566995 is an abundant number, since it is smaller than the sum of its proper divisors (148783725).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131566995 is a wasteful number, since it uses less digits than its factorization.

131566995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 422 counting only the distinct ones).

The product of its digits is 218700, while the sum is 45.

The square root of 131566995 is about 11470.2656900353. The cubic root of 131566995 is about 508.6069828825.

The spelling of 131566995 in words is "one hundred thirty-one million, five hundred sixty-six thousand, nine hundred ninety-five".