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2113111 = 711132111
BaseRepresentation
bin1000000011111001010111
310222100122101
420003321113
51020104421
6113142531
723650450
oct10037127
93870571
102113111
111213680
1285aa47
1358ca80
143d0127
152bb191
hex203e57

2113111 has 16 divisors (see below), whose sum is σ = 2838528. Its totient is φ = 1519200.

The previous prime is 2113109. The next prime is 2113129. The reversal of 2113111 is 1113112.

2113111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2113111 - 21 = 2113109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55 + ... + 2056.

It is an arithmetic number, because the mean of its divisors is an integer number (177408).

22113111 is an apocalyptic number.

2113111 is a deficient number, since it is larger than the sum of its proper divisors (725417).

2113111 is a wasteful number, since it uses less digits than its factorization.

2113111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142.

The product of its digits is 6, while the sum is 10.

The square root of 2113111 is about 1453.6543605686. The cubic root of 2113111 is about 128.3238665455.

Adding to 2113111 its reverse (1113112), we get a palindrome (3226223).

Subtracting from 2113111 its reverse (1113112), we obtain a palindrome (999999).

The spelling of 2113111 in words is "two million, one hundred thirteen thousand, one hundred eleven".

Divisors: 1 7 11 13 77 91 143 1001 2111 14777 23221 27443 162547 192101 301873 2113111