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12130313 = 13271777
BaseRepresentation
bin101110010001…
…100000001001
3211211021122212
4232101200021
511101132223
61111554505
7205051226
oct56214011
924737585
1012130313
116935758
12408ba35
132689400
14187a94d
1510e9278
hexb91809

12130313 has 6 divisors (see below), whose sum is σ = 13135374. Its totient is φ = 11197056.

The previous prime is 12130309. The next prime is 12130319. The reversal of 12130313 is 31303121.

It can be written as a sum of positive squares in 3 ways, for example, as 110224 + 12020089 = 332^2 + 3467^2 .

It is not a de Polignac number, because 12130313 - 22 = 12130309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12130319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35720 + ... + 36057.

It is an arithmetic number, because the mean of its divisors is an integer number (2189229).

Almost surely, 212130313 is an apocalyptic number.

12130313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12130313 is a deficient number, since it is larger than the sum of its proper divisors (1005061).

12130313 is an equidigital number, since it uses as much as digits as its factorization.

12130313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71803 (or 71790 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 12130313 is about 3482.8598880805. The cubic root of 12130313 is about 229.7685952373.

Adding to 12130313 its reverse (31303121), we get a palindrome (43433434).

The spelling of 12130313 in words is "twelve million, one hundred thirty thousand, three hundred thirteen".

Divisors: 1 13 169 71777 933101 12130313