3231129072 has 80 divisors (see below), whose sum is σ = 8950141440. Its totient is φ = 1000836096.

The previous prime is 3231129071. The next prime is 3231129133. The reversal of 3231129072 is 2709211323.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3231129071) 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, 39403 + ... + 89525.

It is an arithmetic number, because the mean of its divisors is an integer number (111876768).

Almost surely, 2^3231129072 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 3231129072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4475070720).

3231129072 is an abundant number, since it is smaller than the sum of its proper divisors (5719012368).

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

3231129072 is a wasteful number, since it uses less digits than its factorization.

3231129072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50230 (or 50224 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 3231129072 is about 56843.0213130864. The cubic root of 3231129072 is about 1478.3755417165.

The spelling of 3231129072 in words is "three billion, two hundred thirty-one million, one hundred twenty-nine thousand, seventy-two".