1340313305 has 8 divisors (see below), whose sum is σ = 1610146944. Its totient is φ = 1071070000.

The previous prime is 1340313301. The next prime is 1340313323. The reversal of 1340313305 is 5033130431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1340313305 - 2² = 1340313301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340313301) 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 in 7 ways as a sum of consecutive naturals, for example, 142571 + ... + 151680.

It is an arithmetic number, because the mean of its divisors is an integer number (201268368).

Almost surely, 2^1340313305 is an apocalyptic number.

It is an amenable number.

1340313305 is a deficient number, since it is larger than the sum of its proper divisors (269833639).

1340313305 is an equidigital number, since it uses as much as digits as its factorization.

1340313305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295167.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 1340313305 is about 36610.2896055194. The cubic root of 1340313305 is about 1102.5596877752.

Adding to 1340313305 its reverse (5033130431), we get a palindrome (6373443736).

The spelling of 1340313305 in words is "one billion, three hundred forty million, three hundred thirteen thousand, three hundred five".