201143 has 4 divisors (see below), whose sum is σ = 204048. Its totient is φ = 198240.

The previous prime is 201139. The next prime is 201151. The reversal of 201143 is 341102.

It is a happy number.

201143 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341102 = 2 ⋅170551.

It is a cyclic number.

It is not a de Polignac number, because 201143 - 2² = 201139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201163) 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, 1346 + ... + 1487.

It is an arithmetic number, because the mean of its divisors is an integer number (51012).

2²⁰¹¹⁴³ is an apocalyptic number.

201143 is a deficient number, since it is larger than the sum of its proper divisors (2905).

201143 is an equidigital number, since it uses as much as digits as its factorization.

201143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2904.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 201143 is about 448.4896877298. The cubic root of 201143 is about 58.5915482847.

Adding to 201143 its reverse (341102), we get a palindrome (542245).

The spelling of 201143 in words is "two hundred one thousand, one hundred forty-three", and thus it is an iban number.