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12130232311 = 27179446309
BaseRepresentation
bin10110100110000010…
…01010011111110111
31011022101011122111101
423103001022133313
5144320314413221
65323400550531
7606412162531
oct132301123767
934271148441
1012130232311
11516522208a
122426482447
1311b4131c72
1483103c851
154aede7d91
hex2d304a7f7

12130232311 has 4 divisors (see below), whose sum is σ = 12130705800. Its totient is φ = 12129758824.

The previous prime is 12130232293. The next prime is 12130232333. The reversal of 12130232311 is 11323203121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12130232311 - 27 = 12130232183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12130232011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195976 + ... + 250333.

It is an arithmetic number, because the mean of its divisors is an integer number (3032676450).

Almost surely, 212130232311 is an apocalyptic number.

12130232311 is a deficient number, since it is larger than the sum of its proper divisors (473489).

12130232311 is an equidigital number, since it uses as much as digits as its factorization.

12130232311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473488.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12130232311 its reverse (11323203121), we get a palindrome (23453435432).

The spelling of 12130232311 in words is "twelve billion, one hundred thirty million, two hundred thirty-two thousand, three hundred eleven".

Divisors: 1 27179 446309 12130232311