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12231030323 = 89137427307
BaseRepresentation
bin10110110010000011…
…01011011000110011
31011120101211201101002
423121001223120303
5200022120432243
65341401232215
7612045020351
oct133101533063
934511751332
1012231030323
115207109126
12245419266b
1311cbc94a65
1484059a7d1
154b8ba8eb8
hex2d906b633

12231030323 has 4 divisors (see below), whose sum is σ = 12368457720. Its totient is φ = 12093602928.

The previous prime is 12231030311. The next prime is 12231030337. The reversal of 12231030323 is 32303013221.

12231030323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32303013221 = 227142304023.

It is a cyclic number.

It is not a de Polignac number, because 12231030323 - 222 = 12226836019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12231030295 and 12231030304.

It is not an unprimeable number, because it can be changed into a prime (12231032323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68713565 + ... + 68713742.

It is an arithmetic number, because the mean of its divisors is an integer number (3092114430).

Almost surely, 212231030323 is an apocalyptic number.

12231030323 is a deficient number, since it is larger than the sum of its proper divisors (137427397).

12231030323 is an equidigital number, since it uses as much as digits as its factorization.

12231030323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137427396.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 12231030323 its reverse (32303013221), we get a palindrome (44534043544).

The spelling of 12231030323 in words is "twelve billion, two hundred thirty-one million, thirty thousand, three hundred twenty-three".

Divisors: 1 89 137427307 12231030323