1340140213 has 2 divisors, whose sum is σ = 1340140214. Its totient is φ = 1340140212.

The previous prime is 1340140211. The next prime is 1340140237. The reversal of 1340140213 is 3120410431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1301910724 + 38229489 = 36082^2 + 6183^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340140213 - 2¹ = 1340140211 is a prime.

Together with 1340140211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340140211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670070106 + 670070107.

It is an arithmetic number, because the mean of its divisors is an integer number (670070107).

Almost surely, 2^1340140213 is an apocalyptic number.

It is an amenable number.

1340140213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340140213 is an equidigital number, since it uses as much as digits as its factorization.

1340140213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1340140213 is about 36607.9255489846. The cubic root of 1340140213 is about 1102.5122231322.

Adding to 1340140213 its reverse (3120410431), we get a palindrome (4460550644).

The spelling of 1340140213 in words is "one billion, three hundred forty million, one hundred forty thousand, two hundred thirteen".