131305883666 has 8 divisors (see below), whose sum is σ = 196976506044. Its totient is φ = 65647048320.

The previous prime is 131305883627. The next prime is 131305883669. The reversal of 131305883666 is 666388503131.

131305883666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 127495414225 + 3810469441 = 357065^2 + 61729^2 .

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

It is not an unprimeable number, because it can be changed into a prime (131305883669) 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, 2918855 + ... + 2963498.

Almost surely, 2^131305883666 is an apocalyptic number.

131305883666 is a deficient number, since it is larger than the sum of its proper divisors (65670622378).

131305883666 is a wasteful number, since it uses less digits than its factorization.

131305883666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5893516.

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 131305883666 in words is "one hundred thirty-one billion, three hundred five million, eight hundred eighty-three thousand, six hundred sixty-six".