131785855 has 8 divisors (see below), whose sum is σ = 158502672. Its totient is φ = 105188928.

The previous prime is 131785847. The next prime is 131785861. The reversal of 131785855 is 558587131.

It is a happy number.

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 131785855 - 2³ = 131785847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 27534 + ... + 31963.

It is an arithmetic number, because the mean of its divisors is an integer number (19812834).

Almost surely, 2^131785855 is an apocalyptic number.

131785855 is a deficient number, since it is larger than the sum of its proper divisors (26716817).

131785855 is an equidigital number, since it uses as much as digits as its factorization.

131785855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59945.

The product of its digits is 168000, while the sum is 43.

The square root of 131785855 is about 11479.8020453316. The cubic root of 131785855 is about 508.8888470341. Note that the first 4 decimals are identical.

The spelling of 131785855 in words is "one hundred thirty-one million, seven hundred eighty-five thousand, eight hundred fifty-five".