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13019123 = 131952709
BaseRepresentation
bin110001101010…
…011111110011
3220111102212202
4301222133303
511313102443
61143013415
7215442425
oct61523763
926442782
1013019123
117392507
12443a26b
13290ab30
141a2c815
1512227b8
hexc6a7f3

13019123 has 8 divisors (see below), whose sum is σ = 14758800. Its totient is φ = 11384928.

The previous prime is 13019113. The next prime is 13019137. The reversal of 13019123 is 32191031.

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 13019123 - 218 = 12756979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13019095 and 13019104.

It is not an unprimeable number, because it can be changed into a prime (13019113) 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, 26108 + ... + 26601.

It is an arithmetic number, because the mean of its divisors is an integer number (1844850).

Almost surely, 213019123 is an apocalyptic number.

13019123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13019123 is a deficient number, since it is larger than the sum of its proper divisors (1739677).

13019123 is a wasteful number, since it uses less digits than its factorization.

13019123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52741.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 13019123 is about 3608.2021839138. The cubic root of 13019123 is about 235.2487060634.

The spelling of 13019123 in words is "thirteen million, nineteen thousand, one hundred twenty-three".

Divisors: 1 13 19 247 52709 685217 1001471 13019123