86115131 has 2 divisors, whose sum is σ = 86115132. Its totient is φ = 86115130.

The previous prime is 86115121. The next prime is 86115143. The reversal of 86115131 is 13151168.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86115131 - 2⁶ = 86115067 is a prime.

It is a super-2 number, since 2×86115131² = 14831631574294322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86115131.

It is not a weakly prime, because it can be changed into another prime (86115101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43057565 + 43057566.

It is an arithmetic number, because the mean of its divisors is an integer number (43057566).

Almost surely, 2^86115131 is an apocalyptic number.

86115131 is a deficient number, since it is larger than the sum of its proper divisors (1).

86115131 is an equidigital number, since it uses as much as digits as its factorization.

86115131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 26.

The square root of 86115131 is about 9279.8238668630. The cubic root of 86115131 is about 441.5973808169.

Adding to 86115131 its reverse (13151168), we get a palindrome (99266299).

The spelling of 86115131 in words is "eighty-six million, one hundred fifteen thousand, one hundred thirty-one".