1340734771 has 4 divisors (see below), whose sum is σ = 1353035200. Its totient is φ = 1328434344.

The previous prime is 1340734763. The next prime is 1340734777. The reversal of 1340734771 is 1774370431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1774370431 = 83 ⋅21377957.

It is a cyclic number.

It is not a de Polignac number, because 1340734771 - 2³ = 1340734763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1340734771.

It is not an unprimeable number, because it can be changed into a prime (1340734777) 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, 6150051 + ... + 6150268.

It is an arithmetic number, because the mean of its divisors is an integer number (338258800).

Almost surely, 2^1340734771 is an apocalyptic number.

1340734771 is a deficient number, since it is larger than the sum of its proper divisors (12300429).

1340734771 is a wasteful number, since it uses less digits than its factorization.

1340734771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12300428.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 1340734771 is about 36616.0452670684. The cubic root of 1340734771 is about 1102.6752435238.

The spelling of 1340734771 in words is "one billion, three hundred forty million, seven hundred thirty-four thousand, seven hundred seventy-one".