1340605411 has 4 divisors (see below), whose sum is σ = 1340902512. Its totient is φ = 1340308312.

The previous prime is 1340605391. The next prime is 1340605429. The reversal of 1340605411 is 1145060431.

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 1340605411 - 2⁷ = 1340605283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340605471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141676 + ... + 150841.

It is an arithmetic number, because the mean of its divisors is an integer number (335225628).

Almost surely, 2^1340605411 is an apocalyptic number.

1340605411 is a deficient number, since it is larger than the sum of its proper divisors (297101).

1340605411 is an equidigital number, since it uses as much as digits as its factorization.

1340605411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297100.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1340605411 is about 36614.2787857415. The cubic root of 1340605411 is about 1102.6397787273.

Adding to 1340605411 its reverse (1145060431), we get a palindrome (2485665842).

The spelling of 1340605411 in words is "one billion, three hundred forty million, six hundred five thousand, four hundred eleven".