213312653 has 2 divisors, whose sum is σ = 213312654. Its totient is φ = 213312652.

The previous prime is 213312641. The next prime is 213312667. The reversal of 213312653 is 356213312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213218404 + 94249 = 14602^2 + 307^2 .

It is a cyclic number.

It is not a de Polignac number, because 213312653 - 2⁸ = 213312397 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 (213312623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106656326 + 106656327.

It is an arithmetic number, because the mean of its divisors is an integer number (106656327).

Almost surely, 2^213312653 is an apocalyptic number.

It is an amenable number.

213312653 is a deficient number, since it is larger than the sum of its proper divisors (1).

213312653 is an equidigital number, since it uses as much as digits as its factorization.

213312653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 26.

The square root of 213312653 is about 14605.2269068303. The cubic root of 213312653 is about 597.5013245537.

Adding to 213312653 its reverse (356213312), we get a palindrome (569525965).

The spelling of 213312653 in words is "two hundred thirteen million, three hundred twelve thousand, six hundred fifty-three".