201385 has 4 divisors (see below), whose sum is σ = 241668. Its totient is φ = 161104.

The previous prime is 201359. The next prime is 201389. The reversal of 201385 is 583102.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 138384 + 63001 = 372^2 + 251^2 .

It is a cyclic number.

It is not a de Polignac number, because 201385 - 2¹¹ = 199337 is a prime.

It is a Duffinian number.

201385 is a lucky number.

It is a nialpdrome in base 12.

It is a congruent number.

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, 20134 + ... + 20143.

It is an arithmetic number, because the mean of its divisors is an integer number (60417).

2²⁰¹³⁸⁵ is an apocalyptic number.

It is an amenable number.

201385 is a deficient number, since it is larger than the sum of its proper divisors (40283).

201385 is an equidigital number, since it uses as much as digits as its factorization.

201385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40282.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 201385 is about 448.7594010157. The cubic root of 201385 is about 58.6150365029.

Adding to 201385 its reverse (583102), we get a palindrome (784487).

The spelling of 201385 in words is "two hundred one thousand, three hundred eighty-five".