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13183121 = 76728109
BaseRepresentation
bin110010010010…
…100010010001
3220210202211202
4302102202101
511333324441
61150320545
7220024520
oct62224221
926722752
1013183121
117494746
1244b9155
132967683
141a724b7
15125619b
hexc92891

13183121 has 8 divisors (see below), whose sum is σ = 15291840. Its totient is φ = 11130768.

The previous prime is 13183097. The next prime is 13183123. The reversal of 13183121 is 12138131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13183121 - 26 = 13183057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13183093 and 13183102.

It is not an unprimeable number, because it can be changed into a prime (13183123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13586 + ... + 14523.

It is an arithmetic number, because the mean of its divisors is an integer number (1911480).

Almost surely, 213183121 is an apocalyptic number.

It is an amenable number.

13183121 is a deficient number, since it is larger than the sum of its proper divisors (2108719).

13183121 is an equidigital number, since it uses as much as digits as its factorization.

13183121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28183.

The product of its digits is 144, while the sum is 20.

The square root of 13183121 is about 3630.8567859391. The cubic root of 13183121 is about 236.2323731051.

The spelling of 13183121 in words is "thirteen million, one hundred eighty-three thousand, one hundred twenty-one".

Divisors: 1 7 67 469 28109 196763 1883303 13183121