131856655 has 8 divisors (see below), whose sum is σ = 180832032. Its totient is φ = 90415968.

The previous prime is 131856653. The next prime is 131856661. The reversal of 131856655 is 556658131.

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 131856655 - 2¹ = 131856653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131856653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1883632 + ... + 1883701.

It is an arithmetic number, because the mean of its divisors is an integer number (22604004).

Almost surely, 2^131856655 is an apocalyptic number.

131856655 is a deficient number, since it is larger than the sum of its proper divisors (48975377).

131856655 is an equidigital number, since it uses as much as digits as its factorization.

131856655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767345.

The product of its digits is 108000, while the sum is 40.

The square root of 131856655 is about 11482.8853081445. The cubic root of 131856655 is about 508.9799617197.

The spelling of 131856655 in words is "one hundred thirty-one million, eight hundred fifty-six thousand, six hundred fifty-five".