321044432 has 40 divisors (see below), whose sum is σ = 657791232. Its totient is φ = 151545600.

The previous prime is 321044431. The next prime is 321044461. The reversal of 321044432 is 234440123.

It is a junction number, because it is equal to n+sod(n) for n = 321044398 and 321044407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321044431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12443 + ... + 28229.

Almost surely, 2^321044432 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 321044432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328895616).

321044432 is an abundant number, since it is smaller than the sum of its proper divisors (336746800).

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

321044432 is a wasteful number, since it uses less digits than its factorization.

321044432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15867 (or 15861 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 321044432 is about 17917.7128004665. The cubic root of 321044432 is about 684.7337178729.

Adding to 321044432 its reverse (234440123), we get a palindrome (555484555).

The spelling of 321044432 in words is "three hundred twenty-one million, forty-four thousand, four hundred thirty-two".