131805412 has 12 divisors (see below), whose sum is σ = 230788656. Its totient is φ = 65865800.

The previous prime is 131805407. The next prime is 131805419. The reversal of 131805412 is 214508131.

It is not an unprimeable number, because it can be changed into a prime (131805419) 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, 214 + ... + 16237.

It is an arithmetic number, because the mean of its divisors is an integer number (19232388).

Almost surely, 2^131805412 is an apocalyptic number.

It is an amenable number.

131805412 is a deficient number, since it is larger than the sum of its proper divisors (98983244).

131805412 is a wasteful number, since it uses less digits than its factorization.

131805412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18458 (or 18456 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 131805412 is about 11480.6538141345. The cubic root of 131805412 is about 508.9140187971.

The spelling of 131805412 in words is "one hundred thirty-one million, eight hundred five thousand, four hundred twelve".