86343431 has 2 divisors, whose sum is σ = 86343432. Its totient is φ = 86343430.

The previous prime is 86343421. The next prime is 86343437. The reversal of 86343431 is 13434368.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86343431 - 2¹⁰ = 86342407 is a prime.

It is a super-2 number, since 2×86343431² = 14910376153703522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86343437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43171715 + 43171716.

It is an arithmetic number, because the mean of its divisors is an integer number (43171716).

Almost surely, 2^86343431 is an apocalyptic number.

86343431 is a deficient number, since it is larger than the sum of its proper divisors (1).

86343431 is an equidigital number, since it uses as much as digits as its factorization.

86343431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 32.

The square root of 86343431 is about 9292.1166049507. The cubic root of 86343431 is about 441.9872763753.

Adding to 86343431 its reverse (13434368), we get a palindrome (99777799).

The spelling of 86343431 in words is "eighty-six million, three hundred forty-three thousand, four hundred thirty-one".