138314213 has 2 divisors, whose sum is σ = 138314214. Its totient is φ = 138314212.

The previous prime is 138314207. The next prime is 138314221. The reversal of 138314213 is 312413831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123698884 + 14615329 = 11122^2 + 3823^2 .

It is a cyclic number.

It is not a de Polignac number, because 138314213 - 2⁸ = 138313957 is a prime.

It is a Sophie Germain 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 (138314233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69157106 + 69157107.

It is an arithmetic number, because the mean of its divisors is an integer number (69157107).

Almost surely, 2^138314213 is an apocalyptic number.

It is an amenable number.

138314213 is a deficient number, since it is larger than the sum of its proper divisors (1).

138314213 is an equidigital number, since it uses as much as digits as its factorization.

138314213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 26.

The square root of 138314213 is about 11760.7063138232. The cubic root of 138314213 is about 517.1568362898.

The spelling of 138314213 in words is "one hundred thirty-eight million, three hundred fourteen thousand, two hundred thirteen".