131885918 has 8 divisors (see below), whose sum is σ = 200333280. Its totient is φ = 65108160.

The previous prime is 131885917. The next prime is 131885951. The reversal of 131885918 is 819588131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131885911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417203 + ... + 417518.

It is an arithmetic number, because the mean of its divisors is an integer number (25041660).

Almost surely, 2^131885918 is an apocalyptic number.

131885918 is a deficient number, since it is larger than the sum of its proper divisors (68447362).

131885918 is an equidigital number, since it uses as much as digits as its factorization.

131885918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834802.

The product of its digits is 69120, while the sum is 44.

The square root of 131885918 is about 11484.1594381130. The cubic root of 131885918 is about 509.0176116432.

The spelling of 131885918 in words is "one hundred thirty-one million, eight hundred eighty-five thousand, nine hundred eighteen".