86422431 has 16 divisors (see below), whose sum is σ = 126570240. Its totient is φ = 52208640.

The previous prime is 86422423. The next prime is 86422463. The reversal of 86422431 is 13422468.

It is not a de Polignac number, because 86422431 - 2³ = 86422423 is a prime.

It is a super-2 number, since 2×86422431² = 14937673159899522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86422481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31650 + ... + 34271.

It is an arithmetic number, because the mean of its divisors is an integer number (7910640).

Almost surely, 2^86422431 is an apocalyptic number.

86422431 is a deficient number, since it is larger than the sum of its proper divisors (40147809).

86422431 is a wasteful number, since it uses less digits than its factorization.

86422431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65966.

The product of its digits is 9216, while the sum is 30.

The square root of 86422431 is about 9296.3665482811. The cubic root of 86422431 is about 442.1220341703.

Adding to 86422431 its reverse (13422468), we get a palindrome (99844899).

The spelling of 86422431 in words is "eighty-six million, four hundred twenty-two thousand, four hundred thirty-one".