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12423403213 = 1319419120041
BaseRepresentation
bin10111001000111111…
…00001011011001101
31012001210211021100221
423210133201123031
5200420342400323
65412432351341
7616602120304
oct134437413315
935053737327
1012423403213
1152a5761791
1224a86a5551
13122caab580
1485bd5543b
154caa0855d
hex2e47e16cd

12423403213 has 16 divisors (see below), whose sum is σ = 14116939200. Its totient is φ = 10838171520.

The previous prime is 12423403207. The next prime is 12423403217. The reversal of 12423403213 is 31230432421.

It is not a de Polignac number, because 12423403213 - 29 = 12423402701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12423403217) 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 15 ways as a sum of consecutive naturals, for example, 43473 + ... + 163513.

It is an arithmetic number, because the mean of its divisors is an integer number (882308700).

Almost surely, 212423403213 is an apocalyptic number.

12423403213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12423403213 is a deficient number, since it is larger than the sum of its proper divisors (1693535987).

12423403213 is a wasteful number, since it uses less digits than its factorization.

12423403213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120492.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 12423403213 its reverse (31230432421), we get a palindrome (43653835634).

The spelling of 12423403213 in words is "twelve billion, four hundred twenty-three million, four hundred three thousand, two hundred thirteen".

Divisors: 1 13 19 247 419 5447 7961 103493 120041 1560533 2280779 29650127 50297179 653863327 955646401 12423403213