131158121887 has 8 divisors (see below), whose sum is σ = 141251314400. Its totient is φ = 121065516000.

The previous prime is 131158121881. The next prime is 131158121923. The reversal of 131158121887 is 788121851131.

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

It is not a de Polignac number, because 131158121887 - 2¹⁵ = 131158089119 is a prime.

It is a super-3 number, since 3×131158121887³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131158121881) 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, 390637 + ... + 644137.

It is an arithmetic number, because the mean of its divisors is an integer number (17656414300).

Almost surely, 2^131158121887 is an apocalyptic number.

131158121887 is a deficient number, since it is larger than the sum of its proper divisors (10093192513).

131158121887 is a wasteful number, since it uses less digits than its factorization.

131158121887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293313.

The product of its digits is 107520, while the sum is 46.

The spelling of 131158121887 in words is "one hundred thirty-one billion, one hundred fifty-eight million, one hundred twenty-one thousand, eight hundred eighty-seven".