213262717 has 2 divisors, whose sum is σ = 213262718. Its totient is φ = 213262716.

The previous prime is 213262691. The next prime is 213262727. The reversal of 213262717 is 717262312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212314041 + 948676 = 14571^2 + 974^2 .

It is a cyclic number.

It is not a de Polignac number, because 213262717 - 2⁷ = 213262589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213262727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106631358 + 106631359.

It is an arithmetic number, because the mean of its divisors is an integer number (106631359).

Almost surely, 2^213262717 is an apocalyptic number.

It is an amenable number.

213262717 is a deficient number, since it is larger than the sum of its proper divisors (1).

213262717 is an equidigital number, since it uses as much as digits as its factorization.

213262717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 31.

The square root of 213262717 is about 14603.5172818058. The cubic root of 213262717 is about 597.4546963544.

The spelling of 213262717 in words is "two hundred thirteen million, two hundred sixty-two thousand, seven hundred seventeen".