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13144109 = 112234723
BaseRepresentation
bin110010001001…
…000000101101
3220201210022212
4302021000231
511331102414
61145420205
7216503006
oct62110055
926653285
1013144109
117468400
12449a665
1329529a4
141a621ad
15124983e
hexc8902d

13144109 has 12 divisors (see below), whose sum is σ = 15079008. Its totient is φ = 11427240.

The previous prime is 13144091. The next prime is 13144123. The reversal of 13144109 is 90144131.

It is not a de Polignac number, because 13144109 - 212 = 13140013 is a prime.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144169) 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, 422 + ... + 5144.

It is an arithmetic number, because the mean of its divisors is an integer number (1256584).

Almost surely, 213144109 is an apocalyptic number.

It is an amenable number.

13144109 is a deficient number, since it is larger than the sum of its proper divisors (1934899).

13144109 is a wasteful number, since it uses less digits than its factorization.

13144109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4768 (or 4757 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 13144109 is about 3625.4805198760. The cubic root of 13144109 is about 235.9991202208. Note that the first 3 decimals are identical.

The spelling of 13144109 in words is "thirteen million, one hundred forty-four thousand, one hundred nine".

Divisors: 1 11 23 121 253 2783 4723 51953 108629 571483 1194919 13144109