1440120321331 has 8 divisors (see below), whose sum is σ = 1450827710640. Its totient is φ = 1429415766528.

The previous prime is 1440120321329. The next prime is 1440120321389. The reversal of 1440120321331 is 1331230210441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1440120321331 - 2¹ = 1440120321329 is a prime.

It is a super-2 number, since 2×1440120321331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1440120321296 and 1440120321305.

It is not an unprimeable number, because it can be changed into a prime (1440120021331) 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 7 ways as a sum of consecutive naturals, for example, 316780 + ... + 1726438.

It is an arithmetic number, because the mean of its divisors is an integer number (181353463830).

Almost surely, 2^{1440120321331} is an apocalyptic number.

1440120321331 is a deficient number, since it is larger than the sum of its proper divisors (10707389309).

1440120321331 is a wasteful number, since it uses less digits than its factorization.

1440120321331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417253.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1440120321331 its reverse (1331230210441), we get a palindrome (2771350531772).

The spelling of 1440120321331 in words is "one trillion, four hundred forty billion, one hundred twenty million, three hundred twenty-one thousand, three hundred thirty-one".