84731143 has 6 divisors (see below), whose sum is σ = 98564856. Its totient is φ = 72626652.

The previous prime is 84731137. The next prime is 84731159. The reversal of 84731143 is 34113748.

It is not a de Polignac number, because 84731143 - 2⁹ = 84730631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84731743) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 864555 + ... + 864652.

It is an arithmetic number, because the mean of its divisors is an integer number (16427476).

Almost surely, 2^84731143 is an apocalyptic number.

84731143 is a deficient number, since it is larger than the sum of its proper divisors (13833713).

84731143 is a wasteful number, since it uses less digits than its factorization.

84731143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729221 (or 1729214 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 84731143 is about 9204.9520911301. The cubic root of 84731143 is about 439.2189017311.

The spelling of 84731143 in words is "eighty-four million, seven hundred thirty-one thousand, one hundred forty-three".