201289213 has 8 divisors (see below), whose sum is σ = 211773240. Its totient is φ = 191070720.

The previous prime is 201289201. The next prime is 201289219. The reversal of 201289213 is 312982102.

It can be written as a sum of positive squares in 4 ways, for example, as 273529 + 201015684 = 523^2 + 14178^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201289213 - 2⁵ = 201289181 is a prime.

It is a super-3 number, since 3×201289213³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201289219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64828 + ... + 67861.

It is an arithmetic number, because the mean of its divisors is an integer number (26471655).

Almost surely, 2^201289213 is an apocalyptic number.

It is an amenable number.

201289213 is a deficient number, since it is larger than the sum of its proper divisors (10484027).

201289213 is a wasteful number, since it uses less digits than its factorization.

201289213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132767.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 201289213 is about 14187.6429684426. The cubic root of 201289213 is about 586.0574178733.

The spelling of 201289213 in words is "two hundred one million, two hundred eighty-nine thousand, two hundred thirteen".