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2000011111 = 71289221657
BaseRepresentation
bin111011100110101…
…1011111101100111
312011101101002110121
41313031123331213
513044000323421
6530243102411
7100363546120
oct16715337547
95141332417
102000011111
11936a54a4a
12479971a07
1325b47c437
1414d89d047
15ba8b5d41
hex7735bf67

2000011111 has 8 divisors (see below), whose sum is σ = 2287510560. Its totient is φ = 1712957568.

The previous prime is 2000011109. The next prime is 2000011147. The reversal of 2000011111 is 1111100002.

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

It is not a de Polignac number, because 2000011111 - 21 = 2000011109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2000011094 and 2000011103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000111111) 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, 101806 + ... + 119851.

It is an arithmetic number, because the mean of its divisors is an integer number (285938820).

Almost surely, 22000011111 is an apocalyptic number.

2000011111 is a deficient number, since it is larger than the sum of its proper divisors (287499449).

2000011111 is a wasteful number, since it uses less digits than its factorization.

2000011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222953.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 2000011111 is about 44721.4837745798. The cubic root of 2000011111 is about 1259.9233830544.

Adding to 2000011111 its reverse (1111100002), we get a palindrome (3111111113).

The spelling of 2000011111 in words is "two billion, eleven thousand, one hundred eleven".

Divisors: 1 7 1289 9023 221657 1551599 285715873 2000011111