201071 has 4 divisors (see below), whose sum is σ = 216552. Its totient is φ = 185592.

The previous prime is 201049. The next prime is 201073. The reversal of 201071 is 170102.

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 201071 - 2⁶ = 201007 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 (201073) 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, 7721 + ... + 7746.

It is an arithmetic number, because the mean of its divisors is an integer number (54138).

2²⁰¹⁰⁷¹ is an apocalyptic number.

201071 is a deficient number, since it is larger than the sum of its proper divisors (15481).

201071 is a wasteful number, since it uses less digits than its factorization.

201071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15480.

The product of its (nonzero) digits is 14, while the sum is 11.

The square root of 201071 is about 448.4094111412. The cubic root of 201071 is about 58.5845564183.

Adding to 201071 its reverse (170102), we get a palindrome (371173).

The spelling of 201071 in words is "two hundred one thousand, seventy-one", and thus it is an iban number.