213071617 has 4 divisors (see below), whose sum is σ = 232441776. Its totient is φ = 193701460.

The previous prime is 213071569. The next prime is 213071623. The reversal of 213071617 is 716170312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213071617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213071627) 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 in 3 ways as a sum of consecutive naturals, for example, 9685063 + ... + 9685084.

It is an arithmetic number, because the mean of its divisors is an integer number (58110444).

Almost surely, 2^213071617 is an apocalyptic number.

It is an amenable number.

213071617 is a deficient number, since it is larger than the sum of its proper divisors (19370159).

213071617 is a wasteful number, since it uses less digits than its factorization.

213071617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19370158.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 213071617 is about 14596.9728711127. The cubic root of 213071617 is about 597.2761877151.

The spelling of 213071617 in words is "two hundred thirteen million, seventy-one thousand, six hundred seventeen".