731671332 has 72 divisors (see below), whose sum is σ = 2018620800. Its totient is φ = 205611840.

The previous prime is 731671309. The next prime is 731671333. The reversal of 731671332 is 233176137.

It is a happy number.

731671332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 731671293 and 731671302.

It is not an unprimeable number, because it can be changed into a prime (731671333) 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, 25669 + ... + 46067.

It is an arithmetic number, because the mean of its divisors is an integer number (28036400).

Almost surely, 2^731671332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731671332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1009310400).

731671332 is an abundant number, since it is smaller than the sum of its proper divisors (1286949468).

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

731671332 is a wasteful number, since it uses less digits than its factorization.

731671332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20481 (or 20472 counting only the distinct ones).

The product of its digits is 15876, while the sum is 33.

The square root of 731671332 is about 27049.4238755653. The cubic root of 731671332 is about 901.0979735401.

The spelling of 731671332 in words is "seven hundred thirty-one million, six hundred seventy-one thousand, three hundred thirty-two".