1440120320431 has 8 divisors (see below), whose sum is σ = 1550914624224. Its totient is φ = 1329328276320.

The previous prime is 1440120320411. The next prime is 1440120320453. The reversal of 1440120320431 is 1340230210441.

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 1440120320431 - 2¹⁷ = 1440120189359 is a prime.

It is a super-2 number, since 2×1440120320431² (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 = 1440120320396 and 1440120320405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440120320411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 899310 + ... + 1920676.

It is an arithmetic number, because the mean of its divisors is an integer number (193864328028).

Almost surely, 2^{1440120320431} is an apocalyptic number.

1440120320431 is a deficient number, since it is larger than the sum of its proper divisors (110794303793).

1440120320431 is a wasteful number, since it uses less digits than its factorization.

1440120320431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129841.

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

Adding to 1440120320431 its reverse (1340230210441), we get a palindrome (2780350530872).

The spelling of 1440120320431 in words is "one trillion, four hundred forty billion, one hundred twenty million, three hundred twenty thousand, four hundred thirty-one".