201238289 has 4 divisors (see below), whose sum is σ = 229986624. Its totient is φ = 172489956.

The previous prime is 201238277. The next prime is 201238309. The reversal of 201238289 is 982832102.

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 not a de Polignac number, because 201238289 - 2⁴ = 201238273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201238229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14374157 + ... + 14374170.

It is an arithmetic number, because the mean of its divisors is an integer number (57496656).

Almost surely, 2^201238289 is an apocalyptic number.

It is an amenable number.

201238289 is a deficient number, since it is larger than the sum of its proper divisors (28748335).

201238289 is an equidigital number, since it uses as much as digits as its factorization.

201238289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28748334.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 201238289 is about 14185.8481945917. The cubic root of 201238289 is about 586.0079916362.

The spelling of 201238289 in words is "two hundred one million, two hundred thirty-eight thousand, two hundred eighty-nine".