1323001312140 has 144 divisors (see below), whose sum is σ = 3977132167008. Its totient is φ = 328340339712.

The previous prime is 1323001312123. The next prime is 1323001312141. The reversal of 1323001312140 is 412131003231.

It is a super-2 number, since 2×1323001312140² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1323001312141) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 611104 + ... + 1737656.

It is an arithmetic number, because the mean of its divisors is an integer number (27618973382).

Almost surely, 2^{1323001312140} is an apocalyptic number.

1323001312140 is a gapful number since it is divisible by the number (10) 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 1323001312140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1988566083504).

1323001312140 is an abundant number, since it is smaller than the sum of its proper divisors (2654130854868).

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

1323001312140 is a wasteful number, since it uses less digits than its factorization.

1323001312140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126648 (or 1126623 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1323001312140 its reverse (412131003231), we get a palindrome (1735132315371).

The spelling of 1323001312140 in words is "one trillion, three hundred twenty-three billion, one million, three hundred twelve thousand, one hundred forty".