1323001332440 has 32 divisors (see below), whose sum is σ = 3040088172480. Its totient is φ = 517940946432.

The previous prime is 1323001332397. The next prime is 1323001332461. The reversal of 1323001332440 is 442331003231.

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, 351860177 + ... + 351863936.

It is an arithmetic number, because the mean of its divisors is an integer number (95002755390).

Almost surely, 2^{1323001332440} is an apocalyptic number.

1323001332440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323001332440 is an abundant number, since it is smaller than the sum of its proper divisors (1717086840040).

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

1323001332440 is a wasteful number, since it uses less digits than its factorization.

1323001332440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703724171 (or 703724167 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 1323001332440 its reverse (442331003231), we get a palindrome (1765332335671).

The spelling of 1323001332440 in words is "one trillion, three hundred twenty-three billion, one million, three hundred thirty-two thousand, four hundred forty".