131806168 has 32 divisors (see below), whose sum is σ = 281806560. Its totient is φ = 57254400.

The previous prime is 131806159. The next prime is 131806183. The reversal of 131806168 is 861608131.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 35508 + ... + 39043.

It is an arithmetic number, because the mean of its divisors is an integer number (8806455).

Almost surely, 2^131806168 is an apocalyptic number.

It is an amenable number.

131806168 is an abundant number, since it is smaller than the sum of its proper divisors (150000392).

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

131806168 is a wasteful number, since it uses less digits than its factorization.

131806168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74587 (or 74583 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 131806168 is about 11480.6867390414. The cubic root of 131806168 is about 508.9149917927.

The spelling of 131806168 in words is "one hundred thirty-one million, eight hundred six thousand, one hundred sixty-eight".