86850131 has 2 divisors, whose sum is σ = 86850132. Its totient is φ = 86850130.

The previous prime is 86850109. The next prime is 86850133. The reversal of 86850131 is 13105868.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86850131 is a prime.

It is a super-2 number, since 2×86850131² = 15085890509434322, which contains 22 as substring.

Together with 86850133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86850133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43425065 + 43425066.

It is an arithmetic number, because the mean of its divisors is an integer number (43425066).

Almost surely, 2^86850131 is an apocalyptic number.

86850131 is a deficient number, since it is larger than the sum of its proper divisors (1).

86850131 is an equidigital number, since it uses as much as digits as its factorization.

86850131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 86850131 is about 9319.3417686015. The cubic root of 86850131 is about 442.8501804217.

Adding to 86850131 its reverse (13105868), we get a palindrome (99955999).

The spelling of 86850131 in words is "eighty-six million, eight hundred fifty thousand, one hundred thirty-one".