33085531 has 2 divisors, whose sum is σ = 33085532. Its totient is φ = 33085530.

The previous prime is 33085529. The next prime is 33085567. The reversal of 33085531 is 13558033.

It is a weak prime.

It is an emirp because it is prime and its reverse (13558033) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33085531 - 2¹ = 33085529 is a prime.

It is a super-2 number, since 2×33085531² = 2189304723103922, which contains 22 as substring.

Together with 33085529, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 33085531.

It is not a weakly prime, because it can be changed into another prime (33085231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16542765 + 16542766.

It is an arithmetic number, because the mean of its divisors is an integer number (16542766).

Almost surely, 2^33085531 is an apocalyptic number.

33085531 is a deficient number, since it is larger than the sum of its proper divisors (1).

33085531 is an equidigital number, since it uses as much as digits as its factorization.

33085531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 33085531 is about 5752.0023470093. The cubic root of 33085531 is about 321.0303086970.

The spelling of 33085531 in words is "thirty-three million, eighty-five thousand, five hundred thirty-one".