87384130631 has 4 divisors (see below), whose sum is σ = 99867577872. Its totient is φ = 74900683392.

The previous prime is 87384130601. The next prime is 87384130637. The reversal of 87384130631 is 13603148378.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87384130631 - 2¹⁰ = 87384129607 is a prime.

It is a super-2 number, since 2×87384130631² (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 (87384130637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6241723610 + ... + 6241723623.

It is an arithmetic number, because the mean of its divisors is an integer number (24966894468).

Almost surely, 2^87384130631 is an apocalyptic number.

87384130631 is a deficient number, since it is larger than the sum of its proper divisors (12483447241).

87384130631 is a wasteful number, since it uses less digits than its factorization.

87384130631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12483447240.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 87384130631 in words is "eighty-seven billion, three hundred eighty-four million, one hundred thirty thousand, six hundred thirty-one".