1340244341 has 2 divisors, whose sum is σ = 1340244342. Its totient is φ = 1340244340.

The previous prime is 1340244331. The next prime is 1340244361. The reversal of 1340244341 is 1434420431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1214243716 + 126000625 = 34846^2 + 11225^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340244341 - 2¹⁴ = 1340227957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1340244341.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340244331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670122170 + 670122171.

It is an arithmetic number, because the mean of its divisors is an integer number (670122171).

Almost surely, 2^1340244341 is an apocalyptic number.

It is an amenable number.

1340244341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340244341 is an equidigital number, since it uses as much as digits as its factorization.

1340244341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1340244341 is about 36609.3477270492. The cubic root of 1340244341 is about 1102.5407772140.

Adding to 1340244341 its reverse (1434420431), we get a palindrome (2774664772).

The spelling of 1340244341 in words is "one billion, three hundred forty million, two hundred forty-four thousand, three hundred forty-one".