87140274831 has 24 divisors (see below), whose sum is σ = 129550591040. Its totient is φ = 56401240896.

The previous prime is 87140274821. The next prime is 87140274833. The reversal of 87140274831 is 13847204178.

87140274831 is a `hidden beast` number, since 8 + 7 + 140 + 27 + 483 + 1 = 666.

It is not a de Polignac number, because 87140274831 - 2⁵ = 87140274799 is a prime.

It is a super-2 number, since 2×87140274831² (a number of 23 digits) contains 22 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 (87140274833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128416 + ... + 436773.

Almost surely, 2^87140274831 is an apocalyptic number.

87140274831 is a deficient number, since it is larger than the sum of its proper divisors (42410316209).

87140274831 is a wasteful number, since it uses less digits than its factorization.

87140274831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565695 (or 565692 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The spelling of 87140274831 in words is "eighty-seven billion, one hundred forty million, two hundred seventy-four thousand, eight hundred thirty-one".