1340431400443 has 8 divisors (see below), whose sum is σ = 1349566396416. Its totient is φ = 1331324298600.

The previous prime is 1340431400437. The next prime is 1340431400491. The reversal of 1340431400443 is 3440041340431.

It is a happy number.

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 1340431400443 - 2⁵ = 1340431400411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340431400423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6877093 + ... + 7069318.

It is an arithmetic number, because the mean of its divisors is an integer number (168695799552).

Almost surely, 2^{1340431400443} is an apocalyptic number.

1340431400443 is a deficient number, since it is larger than the sum of its proper divisors (9134995973).

1340431400443 is a wasteful number, since it uses less digits than its factorization.

1340431400443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13947065.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 1340431400443 its reverse (3440041340431), we get a palindrome (4780472740874).

The spelling of 1340431400443 in words is "one trillion, three hundred forty billion, four hundred thirty-one million, four hundred thousand, four hundred forty-three".