323130044240 has 80 divisors (see below), whose sum is σ = 763963955856. Its totient is φ = 127071436800.

The previous prime is 323130044221. The next prime is 323130044273. The reversal of 323130044240 is 42440031323.

It can be written as a sum of positive squares in 8 ways, for example, as 692321344 + 322437722896 = 26312^2 + 567836^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10784480 + ... + 10814400.

Almost surely, 2^323130044240 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 323130044240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381981977928).

323130044240 is an abundant number, since it is smaller than the sum of its proper divisors (440833911616).

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

323130044240 is a wasteful number, since it uses less digits than its factorization.

323130044240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32208 (or 32202 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 323130044240 its reverse (42440031323), we get a palindrome (365570075563).

The spelling of 323130044240 in words is "three hundred twenty-three billion, one hundred thirty million, forty-four thousand, two hundred forty".