85031771 has 8 divisors (see below), whose sum is σ = 93062064. Its totient is φ = 77051520.

The previous prime is 85031717. The next prime is 85031797. The reversal of 85031771 is 17713058.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85031771 - 2²⁶ = 17922907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85031711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8906 + ... + 15791.

It is an arithmetic number, because the mean of its divisors is an integer number (11632758).

Almost surely, 2^85031771 is an apocalyptic number.

85031771 is a deficient number, since it is larger than the sum of its proper divisors (8030293).

85031771 is a wasteful number, since it uses less digits than its factorization.

85031771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25021.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 85031771 is about 9221.2673207103. The cubic root of 85031771 is about 439.7377414412.

The spelling of 85031771 in words is "eighty-five million, thirty-one thousand, seven hundred seventy-one".