131861423087 has 8 divisors (see below), whose sum is σ = 134661113280. Its totient is φ = 129073278880.

The previous prime is 131861423063. The next prime is 131861423093. The reversal of 131861423087 is 780324168131.

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

It is a cyclic number.

It is not a de Polignac number, because 131861423087 - 2²⁰ = 131860374511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131861423387) 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, 2863412 + ... + 2909097.

It is an arithmetic number, because the mean of its divisors is an integer number (16832639160).

Almost surely, 2^131861423087 is an apocalyptic number.

131861423087 is a deficient number, since it is larger than the sum of its proper divisors (2799690193).

131861423087 is an equidigital number, since it uses as much as digits as its factorization.

131861423087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5772993.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 131861423087 in words is "one hundred thirty-one billion, eight hundred sixty-one million, four hundred twenty-three thousand, eighty-seven".