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13013219 = 43472137
BaseRepresentation
bin110001101001…
…000011100011
3220111010210002
4301221003203
511312410334
61142530215
7215416262
oct61510343
926433702
1013013219
11738902a
12443696b
13290823b
141a2a5d9
151220b7e
hexc690e3

13013219 has 12 divisors (see below), whose sum is σ = 13704504. Its totient is φ = 12349344.

The previous prime is 13013197. The next prime is 13013227. The reversal of 13013219 is 91231031.

It is not a de Polignac number, because 13013219 - 212 = 13009123 is a prime.

It is a super-2 number, since 2×130132192 = 338687737483922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13013219.

It is not an unprimeable number, because it can be changed into a prime (13013269) 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 11 ways as a sum of consecutive naturals, for example, 94919 + ... + 95055.

It is an arithmetic number, because the mean of its divisors is an integer number (1142042).

Almost surely, 213013219 is an apocalyptic number.

13013219 is a deficient number, since it is larger than the sum of its proper divisors (691285).

13013219 is an equidigital number, since it uses as much as digits as its factorization.

13013219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 227 counting only the distinct ones).

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

The square root of 13013219 is about 3607.3839551675. The cubic root of 13013219 is about 235.2131399615.

The spelling of 13013219 in words is "thirteen million, thirteen thousand, two hundred nineteen".

Divisors: 1 43 47 137 2021 2209 5891 6439 94987 276877 302633 13013219