85800231 has 24 divisors (see below), whose sum is σ = 135547776. Its totient is φ = 51866640.

The previous prime is 85800217. The next prime is 85800233. The reversal of 85800231 is 13200858.

It is a happy number.

It is not a de Polignac number, because 85800231 - 2⁵ = 85800199 is a prime.

It is a super-2 number, since 2×85800231² = 14723359279306722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85800195 and 85800204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85800233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48936 + ... + 50658.

It is an arithmetic number, because the mean of its divisors is an integer number (5647824).

Almost surely, 2^85800231 is an apocalyptic number.

85800231 is a deficient number, since it is larger than the sum of its proper divisors (49747545).

85800231 is a wasteful number, since it uses less digits than its factorization.

85800231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243 (or 2240 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 85800231 is about 9262.8414107119. The cubic root of 85800231 is about 441.0584555459.

The spelling of 85800231 in words is "eighty-five million, eight hundred thousand, two hundred thirty-one".