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13830111 = 321536679
BaseRepresentation
bin110100110000…
…011111011111
3222000122100100
4310300133133
512020030421
61212232143
7225361011
oct64603737
928018310
1013830111
117896849
12476b653
132b32cc9
141ba01b1
151332c26
hexd307df

13830111 has 6 divisors (see below), whose sum is σ = 19976840. Its totient is φ = 9220068.

The previous prime is 13830101. The next prime is 13830121. The reversal of 13830111 is 11103831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13830101) and next prime (13830121).

It is not a de Polignac number, because 13830111 - 217 = 13699039 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 (13830101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 768331 + ... + 768348.

Almost surely, 213830111 is an apocalyptic number.

13830111 is a deficient number, since it is larger than the sum of its proper divisors (6146729).

13830111 is a wasteful number, since it uses less digits than its factorization.

13830111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536685 (or 1536682 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 13830111 is about 3718.8857202124. The cubic root of 13830111 is about 240.0353593736.

Adding to 13830111 its reverse (11103831), we get a palindrome (24933942).

The spelling of 13830111 in words is "thirteen million, eight hundred thirty thousand, one hundred eleven".

Divisors: 1 3 9 1536679 4610037 13830111