323315532440 has 32 divisors (see below), whose sum is σ = 727574562000. Its totient is φ = 129305837184.

The previous prime is 323315532439. The next prime is 323315532457. The reversal of 323315532440 is 44235513323.

It is a self number, because there is not a number n which added to its sum of digits gives 323315532440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378395 + ... + 888714.

Almost surely, 2^323315532440 is an apocalyptic number.

It is an amenable number.

323315532440 is an abundant number, since it is smaller than the sum of its proper divisors (404259029560).

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

323315532440 is a wasteful number, since it uses less digits than its factorization.

323315532440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273499 (or 1273495 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 35.

The spelling of 323315532440 in words is "three hundred twenty-three billion, three hundred fifteen million, five hundred thirty-two thousand, four hundred forty".