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12303221303 = 53232136251
BaseRepresentation
bin10110111010101010…
…00100001000110111
31011202102200101210002
423131111010020313
5200144111040203
65352500421515
7613612440602
oct133525041067
934672611702
1012303221303
11524393629a
1224743a789b
131210c1c909
14849dcd339
154c01b8d88
hex2dd544237

12303221303 has 4 divisors (see below), whose sum is σ = 12535357608. Its totient is φ = 12071085000.

The previous prime is 12303221299. The next prime is 12303221309. The reversal of 12303221303 is 30312230321.

12303221303 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: 30312230321 = 81173734413.

It is a cyclic number.

It is not a de Polignac number, because 12303221303 - 22 = 12303221299 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 (12303221309) 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, 116068073 + ... + 116068178.

It is an arithmetic number, because the mean of its divisors is an integer number (3133839402).

Almost surely, 212303221303 is an apocalyptic number.

12303221303 is a deficient number, since it is larger than the sum of its proper divisors (232136305).

12303221303 is an equidigital number, since it uses as much as digits as its factorization.

12303221303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232136304.

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

Adding to 12303221303 its reverse (30312230321), we get a palindrome (42615451624).

The spelling of 12303221303 in words is "twelve billion, three hundred three million, two hundred twenty-one thousand, three hundred three".

Divisors: 1 53 232136251 12303221303