86570131 has 2 divisors, whose sum is σ = 86570132. Its totient is φ = 86570130.

The previous prime is 86570129. The next prime is 86570153. The reversal of 86570131 is 13107568.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86570131 - 2¹ = 86570129 is a prime.

It is a super-2 number, since 2×86570131² = 14988775162714322, which contains 22 as substring.

Together with 86570129, it forms a pair of twin primes.

It is equal to p_5029708 and since 86570131 and 5029708 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 86570093 and 86570102.

It is not a weakly prime, because it can be changed into another prime (86570101) 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 as a sum of consecutive naturals, namely, 43285065 + 43285066.

It is an arithmetic number, because the mean of its divisors is an integer number (43285066).

Almost surely, 2^86570131 is an apocalyptic number.

86570131 is a deficient number, since it is larger than the sum of its proper divisors (1).

86570131 is an equidigital number, since it uses as much as digits as its factorization.

86570131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 86570131 is about 9304.3071208984. The cubic root of 86570131 is about 442.3737599391.

Adding to 86570131 its reverse (13107568), we get a palindrome (99677699).

The spelling of 86570131 in words is "eighty-six million, five hundred seventy thousand, one hundred thirty-one".