131855205 has 16 divisors (see below), whose sum is σ = 220141440. Its totient is φ = 67265088.

The previous prime is 131855173. The next prime is 131855209. The reversal of 131855205 is 502558131.

It is not a de Polignac number, because 131855205 - 2⁵ = 131855173 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131855209) 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 15 ways as a sum of consecutive naturals, for example, 190750 + ... + 191439.

It is an arithmetic number, because the mean of its divisors is an integer number (13758840).

Almost surely, 2^131855205 is an apocalyptic number.

131855205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131855205 is a deficient number, since it is larger than the sum of its proper divisors (88286235).

131855205 is a wasteful number, since it uses less digits than its factorization.

131855205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382220.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 131855205 is about 11482.8221705293. The cubic root of 131855205 is about 508.9780959975.

The spelling of 131855205 in words is "one hundred thirty-one million, eight hundred fifty-five thousand, two hundred five".