201147 has 4 divisors (see below), whose sum is σ = 268200. Its totient is φ = 134096.

The previous prime is 201139. The next prime is 201151. The reversal of 201147 is 741102.

201147 is digitally balanced in base 7, 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 a cyclic number.

It is not a de Polignac number, because 201147 - 2³ = 201139 is a prime.

It is a D-number.

201147 is strictly pandigital in base 7.

201147 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 201147.

It is not an unprimeable number, because it can be changed into a prime (201107) 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, 33522 + ... + 33527.

It is an arithmetic number, because the mean of its divisors is an integer number (67050).

2²⁰¹¹⁴⁷ is an apocalyptic number.

201147 is a deficient number, since it is larger than the sum of its proper divisors (67053).

201147 is an equidigital number, since it uses as much as digits as its factorization.

201147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67052.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 201147 is about 448.4941471190. The cubic root of 201147 is about 58.5919366728.

Adding to 201147 its reverse (741102), we get a palindrome (942249).

The spelling of 201147 in words is "two hundred one thousand, one hundred forty-seven", and thus it is an iban number.