213346453 has 2 divisors, whose sum is σ = 213346454. Its totient is φ = 213346452.

The previous prime is 213346451. The next prime is 213346499. The reversal of 213346453 is 354643312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211324369 + 2022084 = 14537^2 + 1422^2 .

It is a cyclic number.

It is not a de Polignac number, because 213346453 - 2¹ = 213346451 is a prime.

Together with 213346451, 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 (213346451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106673226 + 106673227.

It is an arithmetic number, because the mean of its divisors is an integer number (106673227).

Almost surely, 2^213346453 is an apocalyptic number.

It is an amenable number.

213346453 is a deficient number, since it is larger than the sum of its proper divisors (1).

213346453 is an equidigital number, since it uses as much as digits as its factorization.

213346453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 31.

The square root of 213346453 is about 14606.3839809858. The cubic root of 213346453 is about 597.5328814850.

Adding to 213346453 its reverse (354643312), we get a palindrome (567989765).

The spelling of 213346453 in words is "two hundred thirteen million, three hundred forty-six thousand, four hundred fifty-three".