321234432 has 80 divisors (see below), whose sum is σ = 859974720. Its totient is φ = 106555392.

The previous prime is 321234427. The next prime is 321234497. The reversal of 321234432 is 234432123.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434319 + ... + 435057.

It is an arithmetic number, because the mean of its divisors is an integer number (10749684).

Almost surely, 2^321234432 is an apocalyptic number.

321234432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321234432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (429987360).

321234432 is an abundant number, since it is smaller than the sum of its proper divisors (538740288).

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

321234432 is an equidigital number, since it uses as much as digits as its factorization.

321234432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043 (or 1027 counting only the distinct ones).

The product of its digits is 3456, while the sum is 24.

The square root of 321234432 is about 17923.0140322436. The cubic root of 321234432 is about 684.8687705705.

Adding to 321234432 its reverse (234432123), we get a palindrome (555666555).

The spelling of 321234432 in words is "three hundred twenty-one million, two hundred thirty-four thousand, four hundred thirty-two".