201387 has 4 divisors (see below), whose sum is σ = 268520. Its totient is φ = 134256.

The previous prime is 201359. The next prime is 201389. The reversal of 201387 is 783102.

201387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 201387 - 2¹⁰ = 200363 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (201389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33562 + ... + 33567.

It is an arithmetic number, because the mean of its divisors is an integer number (67130).

2²⁰¹³⁸⁷ is an apocalyptic number.

201387 is a deficient number, since it is larger than the sum of its proper divisors (67133).

201387 is an equidigital number, since it uses as much as digits as its factorization.

201387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67132.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 201387 is about 448.7616293758. The cubic root of 201387 is about 58.6152305420.

Adding to 201387 its reverse (783102), we get a palindrome (984489).

The spelling of 201387 in words is "two hundred one thousand, three hundred eighty-seven".