831009630 has 32 divisors (see below), whose sum is σ = 2175735168. Its totient is φ = 201456800.

The previous prime is 831009601. The next prime is 831009637. The reversal of 831009630 is 36900138.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831009637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1258776 + ... + 1259435.

It is an arithmetic number, because the mean of its divisors is an integer number (67991724).

Almost surely, 2^831009630 is an apocalyptic number.

831009630 is an abundant number, since it is smaller than the sum of its proper divisors (1344725538).

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

831009630 is a wasteful number, since it uses less digits than its factorization.

831009630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518232.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 831009630 is about 28827.2376408146. The cubic root of 831009630 is about 940.1605392019.

Adding to 831009630 its reverse (36900138), we get a palindrome (867909768).

The spelling of 831009630 in words is "eight hundred thirty-one million, nine thousand, six hundred thirty".