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12130361 = 23527407
BaseRepresentation
bin101110010001…
…100000111001
3211211021201122
4232101200321
511101132421
61111555025
7205051325
oct56214071
924737648
1012130361
1169357a1
12408ba75
132689439
14187a985
1510e92ab
hexb91839

12130361 has 4 divisors (see below), whose sum is σ = 12657792. Its totient is φ = 11602932.

The previous prime is 12130357. The next prime is 12130369. The reversal of 12130361 is 16303121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12130361 - 22 = 12130357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12130369) 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 3 ways as a sum of consecutive naturals, for example, 263681 + ... + 263726.

It is an arithmetic number, because the mean of its divisors is an integer number (3164448).

Almost surely, 212130361 is an apocalyptic number.

It is an amenable number.

12130361 is a deficient number, since it is larger than the sum of its proper divisors (527431).

12130361 is an equidigital number, since it uses as much as digits as its factorization.

12130361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527430.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 12130361 is about 3482.8667789624. The cubic root of 12130361 is about 229.7688983039.

Adding to 12130361 its reverse (16303121), we get a palindrome (28433482).

The spelling of 12130361 in words is "twelve million, one hundred thirty thousand, three hundred sixty-one".

Divisors: 1 23 527407 12130361