1340815343 has 8 divisors (see below), whose sum is σ = 1541762688. Its totient is φ = 1142218584.

The previous prime is 1340815339. The next prime is 1340815367. The reversal of 1340815343 is 3435180431.

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 1340815343 - 2² = 1340815339 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 (1340815303) 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, 586421 + ... + 588702.

It is an arithmetic number, because the mean of its divisors is an integer number (192720336).

Almost surely, 2^1340815343 is an apocalyptic number.

1340815343 is a deficient number, since it is larger than the sum of its proper divisors (200947345).

1340815343 is a wasteful number, since it uses less digits than its factorization.

1340815343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175293.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1340815343 is about 36617.1454785869. The cubic root of 1340815343 is about 1102.6973316534.

Adding to 1340815343 its reverse (3435180431), we get a palindrome (4775995774).

The spelling of 1340815343 in words is "one billion, three hundred forty million, eight hundred fifteen thousand, three hundred forty-three".