84347131 has 8 divisors (see below), whose sum is σ = 92233728. Its totient is φ = 76497000.

The previous prime is 84347129. The next prime is 84347147. The reversal of 84347131 is 13174348.

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 84347131 - 2¹ = 84347129 is a prime.

It is a super-2 number, since 2×84347131² = 14228877015862322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84347093 and 84347102.

It is not an unprimeable number, because it can be changed into a prime (84387131) 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, 4155 + ... + 13636.

It is an arithmetic number, because the mean of its divisors is an integer number (11529216).

Almost surely, 2^84347131 is an apocalyptic number.

84347131 is a deficient number, since it is larger than the sum of its proper divisors (7886597).

84347131 is a wasteful number, since it uses less digits than its factorization.

84347131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18233.

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

The square root of 84347131 is about 9184.0694139363. The cubic root of 84347131 is about 438.5543653696.

It can be divided in two parts, 843 and 47131, that added together give a palindrome (47974).

The spelling of 84347131 in words is "eighty-four million, three hundred forty-seven thousand, one hundred thirty-one".