131855196 has 96 divisors (see below), whose sum is σ = 361089792. Its totient is φ = 37002240.

The previous prime is 131855173. The next prime is 131855209. The reversal of 131855196 is 691558131.

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 31 ways as a sum of consecutive naturals, for example, 149910 + ... + 150786.

It is an arithmetic number, because the mean of its divisors is an integer number (3761352).

Almost surely, 2^131855196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131855196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180544896).

131855196 is an abundant number, since it is smaller than the sum of its proper divisors (229234596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131855196 is a wasteful number, since it uses less digits than its factorization.

131855196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979 (or 977 counting only the distinct ones).

The product of its digits is 32400, while the sum is 39.

The square root of 131855196 is about 11482.8217786396. The cubic root of 131855196 is about 508.9780844171.

It can be divided in two parts, 13185 and 5196, that added together give a palindrome (18381).

The spelling of 131855196 in words is "one hundred thirty-one million, eight hundred fifty-five thousand, one hundred ninety-six".