1340110217 has 2 divisors, whose sum is σ = 1340110218. Its totient is φ = 1340110216.

The previous prime is 1340110207. The next prime is 1340110243. The reversal of 1340110217 is 7120110431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1223880256 + 116229961 = 34984^2 + 10781^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340110217 - 2¹⁰ = 1340109193 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340110207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670055108 + 670055109.

It is an arithmetic number, because the mean of its divisors is an integer number (670055109).

Almost surely, 2^1340110217 is an apocalyptic number.

It is an amenable number.

1340110217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340110217 is an equidigital number, since it uses as much as digits as its factorization.

1340110217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 1340110217 is about 36607.5158539882. The cubic root of 1340110217 is about 1102.5039973254.

Adding to 1340110217 its reverse (7120110431), we get a palindrome (8460220648).

The spelling of 1340110217 in words is "one billion, three hundred forty million, one hundred ten thousand, two hundred seventeen".