831729132 has 72 divisors (see below), whose sum is σ = 2337229440. Its totient is φ = 247656960.

The previous prime is 831729109. The next prime is 831729167. The reversal of 831729132 is 231927138.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14157 + ... + 43172.

It is an arithmetic number, because the mean of its divisors is an integer number (32461520).

Almost surely, 2^831729132 is an apocalyptic number.

It is an amenable number.

831729132 is an abundant number, since it is smaller than the sum of its proper divisors (1505500308).

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

831729132 is a wasteful number, since it uses less digits than its factorization.

831729132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57383 (or 57378 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 831729132 is about 28839.7144923454. The cubic root of 831729132 is about 940.4317964899.

The spelling of 831729132 in words is "eight hundred thirty-one million, seven hundred twenty-nine thousand, one hundred thirty-two".