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111441 = 3112307
BaseRepresentation
bin11011001101010001
312122212110
4123031101
512031231
62215533
7642621
oct331521
9178773
10111441
1176800
12545a9
133b955
142c881
1523046
hex1b351

111441 has 12 divisors (see below), whose sum is σ = 163856. Its totient is φ = 67320.

The previous prime is 111439. The next prime is 111443. The reversal of 111441 is 144111.

It is an interprime number because it is at equal distance from previous prime (111439) and next prime (111443).

It is not a de Polignac number, because 111441 - 21 = 111439 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 210 + ... + 516.

2111441 is an apocalyptic number.

111441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111441 is a deficient number, since it is larger than the sum of its proper divisors (52415).

111441 is a wasteful number, since it uses less digits than its factorization.

111441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 321 counting only the distinct ones).

The product of its digits is 16, while the sum is 12.

The square root of 111441 is about 333.8277999209. The cubic root of 111441 is about 48.1225168787.

Adding to 111441 its reverse (144111), we get a palindrome (255552).

It can be divided in two parts, 11 and 1441, that multiplied together give a palindrome (15851).

The spelling of 111441 in words is "one hundred eleven thousand, four hundred forty-one", and thus it is an iban number.