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12123030313213 = 172707263435327
BaseRepresentation
bin1011000001101001110011…
…1010100101100011111101
31120220221122211022120112121
42300122130322211203331
53042110431230010323
641441124312402541
72360600664302221
oct260323472454375
946827584276477
1012123030313213
113954391624106
1214396363a6451
1369c273642ba1
142dca8757c781
15160533e56a5d
hexb069cea58fd

12123030313213 has 8 divisors (see below), whose sum is σ = 12840891628032. Its totient is φ = 11405695874496.

The previous prime is 12123030313169. The next prime is 12123030313271. The reversal of 12123030313213 is 31231303032121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12123030313213 - 213 = 12123030305021 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 (12123030313283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131671645 + ... + 131763682.

It is an arithmetic number, because the mean of its divisors is an integer number (1605111453504).

Almost surely, 212123030313213 is an apocalyptic number.

It is an amenable number.

12123030313213 is a deficient number, since it is larger than the sum of its proper divisors (717861314819).

12123030313213 is a wasteful number, since it uses less digits than its factorization.

12123030313213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263438051.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 12123030313213 its reverse (31231303032121), we get a palindrome (43354333345334).

The spelling of 12123030313213 in words is "twelve trillion, one hundred twenty-three billion, thirty million, three hundred thirteen thousand, two hundred thirteen".

Divisors: 1 17 2707 46019 263435327 4478400559 713119430189 12123030313213