131856727 has 8 divisors (see below), whose sum is σ = 134053920. Its totient is φ = 129669120.

The previous prime is 131856701. The next prime is 131856749. The reversal of 131856727 is 727658131.

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 131856727 - 2¹⁵ = 131823959 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 131856727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131856757) 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, 28599 + ... + 32887.

It is an arithmetic number, because the mean of its divisors is an integer number (16756740).

Almost surely, 2^131856727 is an apocalyptic number.

131856727 is a deficient number, since it is larger than the sum of its proper divisors (2197193).

131856727 is an equidigital number, since it uses as much as digits as its factorization.

131856727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4793.

The product of its digits is 70560, while the sum is 40.

The square root of 131856727 is about 11482.8884432446. Note that the first 3 decimals coincide. The cubic root of 131856727 is about 508.9800543621.

The spelling of 131856727 in words is "one hundred thirty-one million, eight hundred fifty-six thousand, seven hundred twenty-seven".