86231533 has 2 divisors, whose sum is σ = 86231534. Its totient is φ = 86231532.

The previous prime is 86231507. The next prime is 86231573. The reversal of 86231533 is 33513268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78464164 + 7767369 = 8858^2 + 2787^2 .

It is a cyclic number.

It is not a de Polignac number, because 86231533 - 2⁵ = 86231501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86231495 and 86231504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86231503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43115766 + 43115767.

It is an arithmetic number, because the mean of its divisors is an integer number (43115767).

Almost surely, 2^86231533 is an apocalyptic number.

It is an amenable number.

86231533 is a deficient number, since it is larger than the sum of its proper divisors (1).

86231533 is an equidigital number, since it uses as much as digits as its factorization.

86231533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 86231533 is about 9286.0935274205. The cubic root of 86231533 is about 441.7962605982.

The spelling of 86231533 in words is "eighty-six million, two hundred thirty-one thousand, five hundred thirty-three".