85231810 has 16 divisors (see below), whose sum is σ = 154539576. Its totient is φ = 33843328.

The previous prime is 85231801. The next prime is 85231837. The reversal of 85231810 is 1813258.

It can be written as a sum of positive squares in 4 ways, for example, as 48762289 + 36469521 = 6983^2 + 6039^2 .

It is a super-2 number, since 2×85231810² = 14528922871752200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29737 + ... + 32476.

Almost surely, 2^85231810 is an apocalyptic number.

85231810 is a deficient number, since it is larger than the sum of its proper divisors (69307766).

85231810 is a wasteful number, since it uses less digits than its factorization.

85231810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62357.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 85231810 is about 9232.1075600320. The cubic root of 85231810 is about 440.0823020975.

The spelling of 85231810 in words is "eighty-five million, two hundred thirty-one thousand, eight hundred ten".