1340315305 has 32 divisors (see below), whose sum is σ = 1856736000. Its totient is φ = 909833472.

The previous prime is 1340315299. The next prime is 1340315311. The reversal of 1340315305 is 5035130431.

It is an interprime number because it is at equal distance from previous prime (1340315299) and next prime (1340315311).

It is a cyclic number.

It is not a de Polignac number, because 1340315305 - 2⁷ = 1340315177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1340315305.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2186179 + ... + 2186791.

It is an arithmetic number, because the mean of its divisors is an integer number (58023000).

Almost surely, 2^1340315305 is an apocalyptic number.

It is an amenable number.

1340315305 is a deficient number, since it is larger than the sum of its proper divisors (516420695).

1340315305 is a wasteful number, since it uses less digits than its factorization.

1340315305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 1340315305 is about 36610.3169202344. The cubic root of 1340315305 is about 1102.5602361839.

Adding to 1340315305 its reverse (5035130431), we get a palindrome (6375445736).

The spelling of 1340315305 in words is "one billion, three hundred forty million, three hundred fifteen thousand, three hundred five".