87031143 has 12 divisors (see below), whose sum is σ = 133106688. Its totient is φ = 54607680.

The previous prime is 87031099. The next prime is 87031157. The reversal of 87031143 is 34113078.

It is not a de Polignac number, because 87031143 - 2¹⁷ = 86900071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87031163) 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 11 ways as a sum of consecutive naturals, for example, 284263 + ... + 284568.

It is an arithmetic number, because the mean of its divisors is an integer number (11092224).

Almost surely, 2^87031143 is an apocalyptic number.

87031143 is a deficient number, since it is larger than the sum of its proper divisors (46075545).

87031143 is a wasteful number, since it uses less digits than its factorization.

87031143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568854 (or 568851 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 87031143 is about 9329.0483437487. The cubic root of 87031143 is about 443.1576279370.

The spelling of 87031143 in words is "eighty-seven million, thirty-one thousand, one hundred forty-three".