1340331402343 has 4 divisors (see below), whose sum is σ = 1340335821528. Its totient is φ = 1340326983160.

The previous prime is 1340331402313. The next prime is 1340331402359. The reversal of 1340331402343 is 3432041330431.

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 1340331402343 - 2²¹ = 1340329305191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340331402313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1718221 + ... + 2373382.

It is an arithmetic number, because the mean of its divisors is an integer number (335083955382).

Almost surely, 2^{1340331402343} is an apocalyptic number.

1340331402343 is a deficient number, since it is larger than the sum of its proper divisors (4419185).

1340331402343 is an equidigital number, since it uses as much as digits as its factorization.

1340331402343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4419184.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 1340331402343 its reverse (3432041330431), we get a palindrome (4772372732774).

The spelling of 1340331402343 in words is "one trillion, three hundred forty billion, three hundred thirty-one million, four hundred two thousand, three hundred forty-three".