131816382891 has 8 divisors (see below), whose sum is σ = 180505317264. Its totient is φ = 85502518560.

The previous prime is 131816382881. The next prime is 131816382913. The reversal of 131816382891 is 198283618131.

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

It is not a de Polignac number, because 131816382891 - 2¹⁰ = 131816381867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131816382881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593767380 + ... + 593767601.

It is an arithmetic number, because the mean of its divisors is an integer number (22563164658).

Almost surely, 2^131816382891 is an apocalyptic number.

131816382891 is a deficient number, since it is larger than the sum of its proper divisors (48688934373).

131816382891 is a wasteful number, since it uses less digits than its factorization.

131816382891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187535021.

The product of its digits is 497664, while the sum is 51.

The spelling of 131816382891 in words is "one hundred thirty-one billion, eight hundred sixteen million, three hundred eighty-two thousand, eight hundred ninety-one".