86224531 has 2 divisors, whose sum is σ = 86224532. Its totient is φ = 86224530.

The previous prime is 86224529. The next prime is 86224543. The reversal of 86224531 is 13542268.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86224531 - 2¹ = 86224529 is a prime.

It is a super-2 number, since 2×86224531² = 14869339492339922, which contains 22 as substring.

Together with 86224529, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 86224493 and 86224502.

It is not a weakly prime, because it can be changed into another prime (86224591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43112265 + 43112266.

It is an arithmetic number, because the mean of its divisors is an integer number (43112266).

Almost surely, 2^86224531 is an apocalyptic number.

86224531 is a deficient number, since it is larger than the sum of its proper divisors (1).

86224531 is an equidigital number, since it uses as much as digits as its factorization.

86224531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 31.

The square root of 86224531 is about 9285.7165043953. The cubic root of 86224531 is about 441.7843023233.

Adding to 86224531 its reverse (13542268), we get a palindrome (99766799).

The spelling of 86224531 in words is "eighty-six million, two hundred twenty-four thousand, five hundred thirty-one".