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13230985123 = 26953490891
BaseRepresentation
bin11000101001010000…
…01100111110100011
31021011002102200111001
430110220030332203
5204044113010443
610024521532431
7645606342436
oct142450147643
937132380431
1013230985123
11567a600a54
122693044117
13132b1b74a5
148d72d581d
1552687bd4d
hex314a0cfa3

13230985123 has 4 divisors (see below), whose sum is σ = 13231502968. Its totient is φ = 13230467280.

The previous prime is 13230985121. The next prime is 13230985151. The reversal of 13230985123 is 32158903231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13230985123 - 21 = 13230985121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13230985121) 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, 218493 + ... + 272398.

It is an arithmetic number, because the mean of its divisors is an integer number (3307875742).

Almost surely, 213230985123 is an apocalyptic number.

13230985123 is a deficient number, since it is larger than the sum of its proper divisors (517845).

13230985123 is an equidigital number, since it uses as much as digits as its factorization.

13230985123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517844.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 13230985123 in words is "thirteen billion, two hundred thirty million, nine hundred eighty-five thousand, one hundred twenty-three".

Divisors: 1 26953 490891 13230985123