131705568 has 192 divisors, whose sum is σ = 413683200. Its totient is φ = 40642560.

The previous prime is 131705537. The next prime is 131705591. The reversal of 131705568 is 865507131.

131705568 is a `hidden beast` number, since 1 + 31 + 70 + 556 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1165480 + ... + 1165592.

It is an arithmetic number, because the mean of its divisors is an integer number (2154600).

Almost surely, 2^131705568 is an apocalyptic number.

131705568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131705568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206841600).

131705568 is an abundant number, since it is smaller than the sum of its proper divisors (281977632).

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

131705568 is a wasteful number, since it uses less digits than its factorization.

131705568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 131705568 is about 11476.3046317183. The cubic root of 131705568 is about 508.7854837439.

The spelling of 131705568 in words is "one hundred thirty-one million, seven hundred five thousand, five hundred sixty-eight".