87431043 has 16 divisors (see below), whose sum is σ = 135948800. Its totient is φ = 49960008.

The previous prime is 87431041. The next prime is 87431063. The reversal of 87431043 is 34013478.

It is not a de Polignac number, because 87431043 - 2¹ = 87431041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87431043.

It is not an unprimeable number, because it can be changed into a prime (87431041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41455 + ... + 43512.

It is an arithmetic number, because the mean of its divisors is an integer number (8496800).

Almost surely, 2^87431043 is an apocalyptic number.

87431043 is a deficient number, since it is larger than the sum of its proper divisors (48517757).

87431043 is an equidigital number, since it uses as much as digits as its factorization.

87431043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84991 (or 84977 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 87431043 is about 9350.4568337595. The cubic root of 87431043 is about 443.8353469908.

The spelling of 87431043 in words is "eighty-seven million, four hundred thirty-one thousand, forty-three".