1340346345 has 16 divisors (see below), whose sum is σ = 2309520192. Its totient is φ = 659862720.

The previous prime is 1340346341. The next prime is 1340346379. The reversal of 1340346345 is 5436430431.

It is not a de Polignac number, because 1340346345 - 2² = 1340346341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1340346341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3436591 + ... + 3436980.

It is an arithmetic number, because the mean of its divisors is an integer number (144345012).

Almost surely, 2^1340346345 is an apocalyptic number.

1340346345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1340346345 is a deficient number, since it is larger than the sum of its proper divisors (969173847).

1340346345 is a wasteful number, since it uses less digits than its factorization.

1340346345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6873592.

The product of its (nonzero) digits is 51840, while the sum is 33.

The square root of 1340346345 is about 36610.7408419988. The cubic root of 1340346345 is about 1102.5687474164.

Adding to 1340346345 its reverse (5436430431), we get a palindrome (6776776776).

The spelling of 1340346345 in words is "one billion, three hundred forty million, three hundred forty-six thousand, three hundred forty-five".