131845885 has 4 divisors (see below), whose sum is σ = 158215068. Its totient is φ = 105476704.

The previous prime is 131845877. The next prime is 131845907. The reversal of 131845885 is 588548131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20775364 + 111070521 = 4558^2 + 10539^2 .

It is a cyclic number.

It is not a de Polignac number, because 131845885 - 2³ = 131845877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13184584 + ... + 13184593.

It is an arithmetic number, because the mean of its divisors is an integer number (39553767).

Almost surely, 2^131845885 is an apocalyptic number.

It is an amenable number.

131845885 is a deficient number, since it is larger than the sum of its proper divisors (26369183).

131845885 is an equidigital number, since it uses as much as digits as its factorization.

131845885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26369182.

The product of its digits is 153600, while the sum is 43.

The square root of 131845885 is about 11482.4163397780. The cubic root of 131845885 is about 508.9661035809.

The spelling of 131845885 in words is "one hundred thirty-one million, eight hundred forty-five thousand, eight hundred eighty-five".