201331 has 8 divisors (see below), whose sum is σ = 229824. Its totient is φ = 174720.

The previous prime is 201329. The next prime is 201337. The reversal of 201331 is 133102.

201331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 201331 - 2¹ = 201329 is a prime.

It is a super-2 number, since 2×201331² = 81068343122, which contains 22 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 (201337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235 + ... + 676.

It is an arithmetic number, because the mean of its divisors is an integer number (28728).

2²⁰¹³³¹ is an apocalyptic number.

201331 is a deficient number, since it is larger than the sum of its proper divisors (28493).

201331 is a wasteful number, since it uses less digits than its factorization.

201331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 201331 is about 448.6992311114. The cubic root of 201331 is about 58.6097969619.

Adding to 201331 its reverse (133102), we get a palindrome (334433).

The spelling of 201331 in words is "two hundred one thousand, three hundred thirty-one".