1340305355 has 8 divisors (see below), whose sum is σ = 1610833392. Its totient is φ = 1070599648.

The previous prime is 1340305349. The next prime is 1340305361. The reversal of 1340305355 is 5535030431.

It is an interprime number because it is at equal distance from previous prime (1340305349) and next prime (1340305361).

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

It is a cyclic number.

It is not a de Polignac number, because 1340305355 - 2⁴ = 1340305339 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201989 + ... + 208518.

It is an arithmetic number, because the mean of its divisors is an integer number (201354174).

Almost surely, 2^1340305355 is an apocalyptic number.

1340305355 is a deficient number, since it is larger than the sum of its proper divisors (270528037).

1340305355 is an equidigital number, since it uses as much as digits as its factorization.

1340305355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411165.

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 1340305355 is about 36610.1810293257. The cubic root of 1340305355 is about 1102.5575078454.

Adding to 1340305355 its reverse (5535030431), we get a palindrome (6875335786).

The spelling of 1340305355 in words is "one billion, three hundred forty million, three hundred five thousand, three hundred fifty-five".