1440343240331 has 4 divisors (see below), whose sum is σ = 1444494085752. Its totient is φ = 1436192394912.

The previous prime is 1440343240319. The next prime is 1440343240403. The reversal of 1440343240331 is 1330423430441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1440343240331 - 2⁶ = 1440343240267 is a prime.

It is a super-2 number, since 2×1440343240331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1440343240631) 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 3 ways as a sum of consecutive naturals, for example, 2075422190 + ... + 2075422883.

It is an arithmetic number, because the mean of its divisors is an integer number (361123521438).

Almost surely, 2^{1440343240331} is an apocalyptic number.

1440343240331 is a deficient number, since it is larger than the sum of its proper divisors (4150845421).

1440343240331 is an equidigital number, since it uses as much as digits as its factorization.

1440343240331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150845420.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 1440343240331 its reverse (1330423430441), we get a palindrome (2770766670772).

The spelling of 1440343240331 in words is "one trillion, four hundred forty billion, three hundred forty-three million, two hundred forty thousand, three hundred thirty-one".