1340323043 has 2 divisors, whose sum is σ = 1340323044. Its totient is φ = 1340323042.

The previous prime is 1340323013. The next prime is 1340323051. The reversal of 1340323043 is 3403230431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1340323043 - 2⁶ = 1340322979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340323003) 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 as a sum of consecutive naturals, namely, 670161521 + 670161522.

It is an arithmetic number, because the mean of its divisors is an integer number (670161522).

Almost surely, 2^1340323043 is an apocalyptic number.

1340323043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340323043 is an equidigital number, since it uses as much as digits as its factorization.

1340323043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 1340323043 is about 36610.4226006748. The cubic root of 1340323043 is about 1102.5623579718.

Adding to 1340323043 its reverse (3403230431), we get a palindrome (4743553474).

The spelling of 1340323043 in words is "one billion, three hundred forty million, three hundred twenty-three thousand, forty-three".