131858042091 has 8 divisors (see below), whose sum is σ = 175812407760. Its totient is φ = 87904518912.

The previous prime is 131858042083. The next prime is 131858042143. The reversal of 131858042091 is 190240858131.

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

It is not a de Polignac number, because 131858042091 - 2³ = 131858042083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131858042011) 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, 455811 + ... + 686643.

It is an arithmetic number, because the mean of its divisors is an integer number (21976550970).

Almost surely, 2^131858042091 is an apocalyptic number.

131858042091 is a deficient number, since it is larger than the sum of its proper divisors (43954365669).

131858042091 is a wasteful number, since it uses less digits than its factorization.

131858042091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421245.

The product of its (nonzero) digits is 69120, while the sum is 42.

The spelling of 131858042091 in words is "one hundred thirty-one billion, eight hundred fifty-eight million, forty-two thousand, ninety-one".