131178 has 8 divisors (see below), whose sum is σ = 262368. Its totient is φ = 43724.

The previous prime is 131171. The next prime is 131203. The reversal of 131178 is 871131.

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

131178 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (131171) by changing a digit.

131178 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10926 + ... + 10937.

It is an arithmetic number, because the mean of its divisors is an integer number (32796).

2¹³¹¹⁷⁸ is an apocalyptic number.

131178 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131178 is a wasteful number, since it uses less digits than its factorization.

131178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21868.

The product of its digits is 168, while the sum is 21.

The square root of 131178 is about 362.1850355826. The cubic root of 131178 is about 50.8105233743.

The spelling of 131178 in words is "one hundred thirty-one thousand, one hundred seventy-eight".