1320231401440 has 96 divisors (see below), whose sum is σ = 3719608542720. Its totient is φ = 432970289664.

The previous prime is 1320231401429. The next prime is 1320231401443. The reversal of 1320231401440 is 441041320231.

It is a super-3 number, since 3×1320231401440³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320231401443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25599850 + ... + 25651369.

It is an arithmetic number, because the mean of its divisors is an integer number (38745922320).

Almost surely, 2^{1320231401440} is an apocalyptic number.

1320231401440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320231401440 is an abundant number, since it is smaller than the sum of its proper divisors (2399377141280).

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

1320231401440 is a wasteful number, since it uses less digits than its factorization.

1320231401440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51251264 (or 51251256 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1320231401440 its reverse (441041320231), we get a palindrome (1761272721671).

The spelling of 1320231401440 in words is "one trillion, three hundred twenty billion, two hundred thirty-one million, four hundred one thousand, four hundred forty".