87990102231 has 16 divisors (see below), whose sum is σ = 118551269088. Its totient is φ = 58045184000.

The previous prime is 87990102217. The next prime is 87990102271. The reversal of 87990102231 is 13220109978.

It is a cyclic number.

It is not a de Polignac number, because 87990102231 - 2⁵ = 87990102199 is a prime.

It is a super-2 number, since 2×87990102231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87990102271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 437095 + ... + 605831.

It is an arithmetic number, because the mean of its divisors is an integer number (7409454318).

Almost surely, 2^87990102231 is an apocalyptic number.

87990102231 is a deficient number, since it is larger than the sum of its proper divisors (30561166857).

87990102231 is a wasteful number, since it uses less digits than its factorization.

87990102231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170562.

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 87990102231 in words is "eighty-seven billion, nine hundred ninety million, one hundred two thousand, two hundred thirty-one".