213405341 has 2 divisors, whose sum is σ = 213405342. Its totient is φ = 213405340.

The previous prime is 213405331. The next prime is 213405343. The reversal of 213405341 is 143504312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153016900 + 60388441 = 12370^2 + 7771^2 .

It is a cyclic number.

It is not a de Polignac number, because 213405341 - 2⁶ = 213405277 is a prime.

Together with 213405343, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213405343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106702670 + 106702671.

It is an arithmetic number, because the mean of its divisors is an integer number (106702671).

Almost surely, 2^213405341 is an apocalyptic number.

It is an amenable number.

213405341 is a deficient number, since it is larger than the sum of its proper divisors (1).

213405341 is an equidigital number, since it uses as much as digits as its factorization.

213405341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 213405341 is about 14608.3996727910. The cubic root of 213405341 is about 597.5878535407.

Adding to 213405341 its reverse (143504312), we get a palindrome (356909653).

The spelling of 213405341 in words is "two hundred thirteen million, four hundred five thousand, three hundred forty-one".