131855859 has 12 divisors (see below), whose sum is σ = 201662136. Its totient is φ = 82732992.

The previous prime is 131855813. The next prime is 131855869. The reversal of 131855859 is 958558131.

It is not a de Polignac number, because 131855859 - 2¹⁵ = 131823091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131855809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 430749 + ... + 431054.

It is an arithmetic number, because the mean of its divisors is an integer number (16805178).

Almost surely, 2^131855859 is an apocalyptic number.

131855859 is a deficient number, since it is larger than the sum of its proper divisors (69806277).

131855859 is a wasteful number, since it uses less digits than its factorization.

131855859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861826 (or 861823 counting only the distinct ones).

The product of its digits is 216000, while the sum is 45.

The square root of 131855859 is about 11482.8506478139. The cubic root of 131855859 is about 508.9789375042.

It can be divided in two parts, 13185 and 5859, that added together give a square (19044 = 138²).

The spelling of 131855859 in words is "one hundred thirty-one million, eight hundred fifty-five thousand, eight hundred fifty-nine".