86271431 has 2 divisors, whose sum is σ = 86271432. Its totient is φ = 86271430.

The previous prime is 86271403. The next prime is 86271443. The reversal of 86271431 is 13417268.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86271431 - 2²⁶ = 19162567 is a prime.

It is a super-2 number, since 2×86271431² = 14885519613575522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86271401) 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, 43135715 + 43135716.

It is an arithmetic number, because the mean of its divisors is an integer number (43135716).

Almost surely, 2^86271431 is an apocalyptic number.

86271431 is a deficient number, since it is larger than the sum of its proper divisors (1).

86271431 is an equidigital number, since it uses as much as digits as its factorization.

86271431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 86271431 is about 9288.2415450935. The cubic root of 86271431 is about 441.8643875302.

Adding to 86271431 its reverse (13417268), we get a palindrome (99688699).

The spelling of 86271431 in words is "eighty-six million, two hundred seventy-one thousand, four hundred thirty-one".