87178333231 has 16 divisors (see below), whose sum is σ = 95418086400. Its totient is φ = 78991329600.

The previous prime is 87178333219. The next prime is 87178333237. The reversal of 87178333231 is 13233387178.

It is a cyclic number.

It is not a de Polignac number, because 87178333231 - 2¹⁵ = 87178300463 is a prime.

It is a super-2 number, since 2×87178333231² (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 (87178333237) 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 15 ways as a sum of consecutive naturals, for example, 5656546 + ... + 5671936.

It is an arithmetic number, because the mean of its divisors is an integer number (5963630400).

Almost surely, 2^87178333231 is an apocalyptic number.

87178333231 is a deficient number, since it is larger than the sum of its proper divisors (8239753169).

87178333231 is a wasteful number, since it uses less digits than its factorization.

87178333231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17070.

The product of its digits is 508032, while the sum is 46.

The spelling of 87178333231 in words is "eighty-seven billion, one hundred seventy-eight million, three hundred thirty-three thousand, two hundred thirty-one".