831520050 has 96 divisors (see below), whose sum is σ = 2108436480. Its totient is φ = 216820800.

The previous prime is 831520033. The next prime is 831520051. The reversal of 831520050 is 50025138.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 831520050.

It is not an unprimeable number, because it can be changed into a prime (831520051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1735711 + ... + 1736189.

It is an arithmetic number, because the mean of its divisors is an integer number (21962880).

Almost surely, 2^831520050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 831520050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1054218240).

831520050 is an abundant number, since it is smaller than the sum of its proper divisors (1276916430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

831520050 is a wasteful number, since it uses less digits than its factorization.

831520050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728 (or 723 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 831520050 is about 28836.0893673189. The cubic root of 831520050 is about 940.3529872431.

Adding to 831520050 its reverse (50025138), we get a palindrome (881545188).

The spelling of 831520050 in words is "eight hundred thirty-one million, five hundred twenty thousand, fifty".