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12303310123 = 13946408471
BaseRepresentation
bin10110111010101010…
…11001110100101011
31011202102211220121201
423131111121310223
5200144121410443
65352502345031
7613613260546
oct133525316453
934672756551
1012303310123
115243996aa5
12247442b177
131210c51180
1484a01385d
154c01d534d
hex2dd559d2b

12303310123 has 4 divisors (see below), whose sum is σ = 13249718608. Its totient is φ = 11356901640.

The previous prime is 12303310093. The next prime is 12303310127. The reversal of 12303310123 is 32101330321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32101330321 = 37398585539.

It is a cyclic number.

It is not a de Polignac number, because 12303310123 - 233 = 3713375531 is a prime.

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 12303310123.

It is not an unprimeable number, because it can be changed into a prime (12303310127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473204223 + ... + 473204248.

It is an arithmetic number, because the mean of its divisors is an integer number (3312429652).

Almost surely, 212303310123 is an apocalyptic number.

12303310123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12303310123 is a deficient number, since it is larger than the sum of its proper divisors (946408485).

12303310123 is an equidigital number, since it uses as much as digits as its factorization.

12303310123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946408484.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 12303310123 its reverse (32101330321), we get a palindrome (44404640444).

The spelling of 12303310123 in words is "twelve billion, three hundred three million, three hundred ten thousand, one hundred twenty-three".

Divisors: 1 13 946408471 12303310123