87031144 has 16 divisors (see below), whose sum is σ = 165150720. Its totient is φ = 42990960.

The previous prime is 87031099. The next prime is 87031157. The reversal of 87031144 is 44113078.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64872 + ... + 66199.

It is an arithmetic number, because the mean of its divisors is an integer number (10321920).

Almost surely, 2^87031144 is an apocalyptic number.

It is an amenable number.

87031144 is a deficient number, since it is larger than the sum of its proper divisors (78119576).

87031144 is a wasteful number, since it uses less digits than its factorization.

87031144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131160 (or 131156 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 87031144 is about 9329.0483973447. The cubic root of 87031144 is about 443.1576296343.

The spelling of 87031144 in words is "eighty-seven million, thirty-one thousand, one hundred forty-four".