323432140 has 48 divisors (see below), whose sum is σ = 722094912. Its totient is φ = 121266176.

The previous prime is 323432093. The next prime is 323432143. The reversal of 323432140 is 41234323.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (323432143) 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, 87612 + ... + 91228.

It is an arithmetic number, because the mean of its divisors is an integer number (15043644).

Almost surely, 2^323432140 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 323432140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361047456).

323432140 is an abundant number, since it is smaller than the sum of its proper divisors (398662772).

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

323432140 is a wasteful number, since it uses less digits than its factorization.

323432140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906 (or 3904 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 323432140 is about 17984.2191935041. The cubic root of 323432140 is about 686.4270532088.

Adding to 323432140 its reverse (41234323), we get a palindrome (364666463).

The spelling of 323432140 in words is "three hundred twenty-three million, four hundred thirty-two thousand, one hundred forty".