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2071 = 19109
BaseRepresentation
bin100000010111
32211201
4200113
531241
613331
76016
oct4027
92751
102071
111613
121247
13c34
14a7d
15931
hex817

2071 has 4 divisors (see below), whose sum is σ = 2200. Its totient is φ = 1944.

The previous prime is 2069. The next prime is 2081. The reversal of 2071 is 1702.

Adding to 2071 its reverse (1702), we get a palindrome (3773).

It can be divided in two parts, 20 and 71, that added together give a triangular number (91 = T13).

2071 = 162 + 172 + ... + 212.

2071 is nontrivially palindromic in base 6.

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

It is a 3-Lehmer number, since φ(2071) divides (2071-1)3.

It is a cyclic number.

It is not a de Polignac number, because 2071 - 21 = 2069 is a prime.

It is the 46-th Hogben number.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011) by changing a digit.

It is a nontrivial repunit in base 45.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36 + ... + 73.

It is an arithmetic number, because the mean of its divisors is an integer number (550).

22071 is an apocalyptic number.

2071 is a deficient number, since it is larger than the sum of its proper divisors (129).

2071 is a wasteful number, since it uses less digits than its factorization.

2071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128.

The product of its (nonzero) digits is 14, while the sum is 10.

The square root of 2071 is about 45.5082410119. The cubic root of 2071 is about 12.7465709092.

The spelling of 2071 in words is "two thousand, seventy-one", and thus it is an iban number.

Divisors: 1 19 109 2071