84818131 has 8 divisors (see below), whose sum is σ = 86171904. Its totient is φ = 83474760.

The previous prime is 84818099. The next prime is 84818143. The reversal of 84818131 is 13181848.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84818131 - 2⁵ = 84818099 is a prime.

It is a super-2 number, since 2×84818131² = 14388230692666322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84818161) 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 7 ways as a sum of consecutive naturals, for example, 14736 + ... + 19666.

It is an arithmetic number, because the mean of its divisors is an integer number (10771488).

Almost surely, 2^84818131 is an apocalyptic number.

84818131 is a deficient number, since it is larger than the sum of its proper divisors (1353773).

84818131 is a wasteful number, since it uses less digits than its factorization.

84818131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5201.

The product of its digits is 6144, while the sum is 34.

The square root of 84818131 is about 9209.6759443533. The cubic root of 84818131 is about 439.3691562306.

Adding to 84818131 its reverse (13181848), we get a palindrome (97999979).

The spelling of 84818131 in words is "eighty-four million, eight hundred eighteen thousand, one hundred thirty-one".