87860384831 has 4 divisors (see below), whose sum is σ = 88064237664. Its totient is φ = 87656532000.

The previous prime is 87860384771. The next prime is 87860384851. The reversal of 87860384831 is 13848306878.

It is a happy number.

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 87860384831 - 2¹⁴ = 87860368447 is a prime.

It is a super-2 number, since 2×87860384831² (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 (87860384851) 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 3 ways as a sum of consecutive naturals, for example, 101925770 + ... + 101926631.

It is an arithmetic number, because the mean of its divisors is an integer number (22016059416).

Almost surely, 2^87860384831 is an apocalyptic number.

87860384831 is a deficient number, since it is larger than the sum of its proper divisors (203852833).

87860384831 is a wasteful number, since it uses less digits than its factorization.

87860384831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203852832.

The product of its (nonzero) digits is 6193152, while the sum is 56.

The spelling of 87860384831 in words is "eighty-seven billion, eight hundred sixty million, three hundred eighty-four thousand, eight hundred thirty-one".