135340813 has 2 divisors, whose sum is σ = 135340814. Its totient is φ = 135340812.

The previous prime is 135340811. The next prime is 135340861. The reversal of 135340813 is 318043531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69438889 + 65901924 = 8333^2 + 8118^2 .

It is a cyclic number.

It is not a de Polignac number, because 135340813 - 2¹ = 135340811 is a prime.

Together with 135340811, 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 (135340811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67670406 + 67670407.

It is an arithmetic number, because the mean of its divisors is an integer number (67670407).

Almost surely, 2^135340813 is an apocalyptic number.

It is an amenable number.

135340813 is a deficient number, since it is larger than the sum of its proper divisors (1).

135340813 is an equidigital number, since it uses as much as digits as its factorization.

135340813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 135340813 is about 11633.6070502661. The cubic root of 135340813 is about 513.4241116326.

The spelling of 135340813 in words is "one hundred thirty-five million, three hundred forty thousand, eight hundred thirteen".