831223085 has 32 divisors (see below), whose sum is σ = 1286496000. Its totient is φ = 500290560.

The previous prime is 831223079. The next prime is 831223087. The reversal of 831223085 is 580322138.

It is not a de Polignac number, because 831223085 - 2⁶ = 831223021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831223087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26060 + ... + 48389.

It is an arithmetic number, because the mean of its divisors is an integer number (40203000).

Almost surely, 2^831223085 is an apocalyptic number.

It is an amenable number.

831223085 is a deficient number, since it is larger than the sum of its proper divisors (455272915).

831223085 is a wasteful number, since it uses less digits than its factorization.

831223085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74501.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 831223085 is about 28830.9397176020. The cubic root of 831223085 is about 940.2410295599.

The spelling of 831223085 in words is "eight hundred thirty-one million, two hundred twenty-three thousand, eighty-five".