201719213 has 2 divisors, whose sum is σ = 201719214. Its totient is φ = 201719212.

The previous prime is 201719207. The next prime is 201719233. The reversal of 201719213 is 312917102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131377444 + 70341769 = 11462^2 + 8387^2 .

It is a cyclic number.

It is not a de Polignac number, because 201719213 - 2⁴ = 201719197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201719233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100859606 + 100859607.

It is an arithmetic number, because the mean of its divisors is an integer number (100859607).

Almost surely, 2^201719213 is an apocalyptic number.

It is an amenable number.

201719213 is a deficient number, since it is larger than the sum of its proper divisors (1).

201719213 is an equidigital number, since it uses as much as digits as its factorization.

201719213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 201719213 is about 14202.7889162657. The cubic root of 201719213 is about 586.4744388220.

The spelling of 201719213 in words is "two hundred one million, seven hundred nineteen thousand, two hundred thirteen".