84706231 has 4 divisors (see below), whose sum is σ = 85726872. Its totient is φ = 83685592.

The previous prime is 84706159. The next prime is 84706261. The reversal of 84706231 is 13260748.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84706231 - 2¹⁷ = 84575159 is a prime.

It is a super-3 number, since 3×84706231³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84706193 and 84706202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84706261) 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 3 ways as a sum of consecutive naturals, for example, 510196 + ... + 510361.

It is an arithmetic number, because the mean of its divisors is an integer number (21431718).

Almost surely, 2^84706231 is an apocalyptic number.

84706231 is a deficient number, since it is larger than the sum of its proper divisors (1020641).

84706231 is a wasteful number, since it uses less digits than its factorization.

84706231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020640.

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

The square root of 84706231 is about 9203.5988069885. The cubic root of 84706231 is about 439.1758522556.

Adding to 84706231 its reverse (13260748), we get a palindrome (97966979).

The spelling of 84706231 in words is "eighty-four million, seven hundred six thousand, two hundred thirty-one".