85317012 has 36 divisors (see below), whose sum is σ = 235269216. Its totient is φ = 25853520.

The previous prime is 85316983. The next prime is 85317013. The reversal of 85317012 is 21071358.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85317013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107328 + ... + 108119.

It is an arithmetic number, because the mean of its divisors is an integer number (6535256).

Almost surely, 2^85317012 is an apocalyptic number.

It is an amenable number.

85317012 is an abundant number, since it is smaller than the sum of its proper divisors (149952204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85317012 is a wasteful number, since it uses less digits than its factorization.

85317012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215468 (or 215463 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 85317012 is about 9236.7208467075. The cubic root of 85317012 is about 440.2288960549.

The spelling of 85317012 in words is "eighty-five million, three hundred seventeen thousand, twelve".