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12302323013 = 12779633769
BaseRepresentation
bin10110111010100011…
…01000110101000101
31011202100222202120002
423131101220311011
5200143343314023
65352425251045
7613602006641
oct133521506505
934670882502
1012302323013
115243382402
122474033a85
131210996a96
14849c37c21
154c008cb28
hex2dd468d45

12302323013 has 4 divisors (see below), whose sum is σ = 12311958060. Its totient is φ = 12292687968.

The previous prime is 12302322983. The next prime is 12302323027. The reversal of 12302323013 is 31032320321.

12302323013 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: 31032320321 = 311001042591.

It can be written as a sum of positive squares in 2 ways, for example, as 3856161604 + 8446161409 = 62098^2 + 91903^2 .

It is a cyclic number.

It is not a de Polignac number, because 12302323013 - 28 = 12302322757 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 (12302323093) 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, 4815608 + ... + 4818161.

It is an arithmetic number, because the mean of its divisors is an integer number (3077989515).

Almost surely, 212302323013 is an apocalyptic number.

It is an amenable number.

12302323013 is a deficient number, since it is larger than the sum of its proper divisors (9635047).

12302323013 is an equidigital number, since it uses as much as digits as its factorization.

12302323013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9635046.

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

Adding to 12302323013 its reverse (31032320321), we get a palindrome (43334643334).

The spelling of 12302323013 in words is "twelve billion, three hundred two million, three hundred twenty-three thousand, thirteen".

Divisors: 1 1277 9633769 12302323013