13240613 has 2 divisors, whose sum is σ = 13240614. Its totient is φ = 13240612.

The previous prime is 13240609. The next prime is 13240621. The reversal of 13240613 is 31604231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6880129 + 6360484 = 2623^2 + 2522^2 .

It is a cyclic number.

It is not a de Polignac number, because 13240613 - 2² = 13240609 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13240673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6620306 + 6620307.

It is an arithmetic number, because the mean of its divisors is an integer number (6620307).

Almost surely, 2^13240613 is an apocalyptic number.

It is an amenable number.

13240613 is a deficient number, since it is larger than the sum of its proper divisors (1).

13240613 is an equidigital number, since it uses as much as digits as its factorization.

13240613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 13240613 is about 3638.7653125751. The cubic root of 13240613 is about 236.5752806816.

Adding to 13240613 its reverse (31604231), we get a palindrome (44844844).

The spelling of 13240613 in words is "thirteen million, two hundred forty thousand, six hundred thirteen".