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13111141 = 103912619
BaseRepresentation
bin110010000000…
…111101100101
3220200010002211
4302000331211
511324024031
61145003421
7216304621
oct62007545
926603084
1013111141
11744565a
124483571
132940994
141a54181
15123ebb1
hexc80f65

13111141 has 4 divisors (see below), whose sum is σ = 13124800. Its totient is φ = 13097484.

The previous prime is 13111139. The next prime is 13111177. The reversal of 13111141 is 14111131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13111141 - 21 = 13111139 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 (13111181) 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 3 ways as a sum of consecutive naturals, for example, 5271 + ... + 7348.

It is an arithmetic number, because the mean of its divisors is an integer number (3281200).

Almost surely, 213111141 is an apocalyptic number.

It is an amenable number.

13111141 is a deficient number, since it is larger than the sum of its proper divisors (13659).

13111141 is a wasteful number, since it uses less digits than its factorization.

13111141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13658.

The product of its digits is 12, while the sum is 13.

The square root of 13111141 is about 3620.9309576406. The cubic root of 13111141 is about 235.8016443525.

Adding to 13111141 its reverse (14111131), we get a palindrome (27222272).

The spelling of 13111141 in words is "thirteen million, one hundred eleven thousand, one hundred forty-one".

Divisors: 1 1039 12619 13111141