85831371 has 12 divisors (see below), whose sum is σ = 126080760. Its totient is φ = 56250720.

The previous prime is 85831357. The next prime is 85831373. The reversal of 85831371 is 17313858.

85831371 is a `hidden beast` number, since 8 + 583 + 1 + 3 + 71 = 666.

It is not a de Polignac number, because 85831371 - 2⁶ = 85831307 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (85831373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80290 + ... + 81351.

It is an arithmetic number, because the mean of its divisors is an integer number (10506730).

Almost surely, 2^85831371 is an apocalyptic number.

85831371 is a deficient number, since it is larger than the sum of its proper divisors (40249389).

85831371 is a wasteful number, since it uses less digits than its factorization.

85831371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161706 (or 161703 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 85831371 is about 9264.5221679264. The cubic root of 85831371 is about 441.1118077684. Note that the first 3 decimals are identical.

The spelling of 85831371 in words is "eighty-five million, eight hundred thirty-one thousand, three hundred seventy-one".