86040431 has 2 divisors, whose sum is σ = 86040432. Its totient is φ = 86040430.

The previous prime is 86040421. The next prime is 86040511. The reversal of 86040431 is 13404068.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86040431 - 2¹⁰ = 86039407 is a prime.

It is a super-2 number, since 2×86040431² = 14805911533331522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86040431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86040421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43020215 + 43020216.

It is an arithmetic number, because the mean of its divisors is an integer number (43020216).

Almost surely, 2^86040431 is an apocalyptic number.

86040431 is a deficient number, since it is larger than the sum of its proper divisors (1).

86040431 is an equidigital number, since it uses as much as digits as its factorization.

86040431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 86040431 is about 9275.7981327754. The cubic root of 86040431 is about 441.4696569710.

Adding to 86040431 its reverse (13404068), we get a palindrome (99444499).

The spelling of 86040431 in words is "eighty-six million, forty thousand, four hundred thirty-one".