323235540 has 72 divisors (see below), whose sum is σ = 991546920. Its totient is φ = 85223424.

The previous prime is 323235533. The next prime is 323235553. The reversal of 323235540 is 45532323.

It can be written as a sum of positive squares in 4 ways, for example, as 20684304 + 302551236 = 4548^2 + 17394^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5932 + ... + 26108.

It is an arithmetic number, because the mean of its divisors is an integer number (13771485).

Almost surely, 2^323235540 is an apocalyptic number.

323235540 is a gapful number since it is divisible by the number (30) 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 323235540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495773460).

323235540 is an abundant number, since it is smaller than the sum of its proper divisors (668311380).

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

323235540 is a wasteful number, since it uses less digits than its factorization.

323235540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20281 (or 20276 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 27.

The square root of 323235540 is about 17978.7524595006. The cubic root of 323235540 is about 686.2879422023.

Adding to 323235540 its reverse (45532323), we get a palindrome (368767863).

The spelling of 323235540 in words is "three hundred twenty-three million, two hundred thirty-five thousand, five hundred forty".