331356432 has 80 divisors (see below), whose sum is σ = 947082240. Its totient is φ = 98985600.

The previous prime is 331356419. The next prime is 331356433. The reversal of 331356432 is 234653133.

It is a self number, because there is not a number n which added to its sum of digits gives 331356432.

It is not an unprimeable number, because it can be changed into a prime (331356433) 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, 33069 + ... + 41907.

It is an arithmetic number, because the mean of its divisors is an integer number (11838528).

Almost surely, 2^331356432 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 331356432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (473541120).

331356432 is an abundant number, since it is smaller than the sum of its proper divisors (615725808).

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

331356432 is a wasteful number, since it uses less digits than its factorization.

331356432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8932 (or 8926 counting only the distinct ones).

The product of its digits is 19440, while the sum is 30.

The square root of 331356432 is about 18203.1984002812. The cubic root of 331356432 is about 691.9878488071.

The spelling of 331356432 in words is "three hundred thirty-one million, three hundred fifty-six thousand, four hundred thirty-two".