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13101231223 = 18379712837
BaseRepresentation
bin11000011001110010…
…01110110001110111
31020211001021111121001
430030321032301313
5203312403344343
610004004504131
7642442425253
oct141471166167
936731244531
1013101231223
115613337a23
1226576ab047
13130a356a32
148c3d9b263
1551a29b44d
hex30ce4ec77

13101231223 has 4 divisors (see below), whose sum is σ = 13101962440. Its totient is φ = 13100500008.

The previous prime is 13101231133. The next prime is 13101231277. The reversal of 13101231223 is 32213210131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32213210131 = 42859751609.

It is a cyclic number.

It is not a de Polignac number, because 13101231223 - 217 = 13101100151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13101231223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13101261223) 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 3 ways as a sum of consecutive naturals, for example, 338040 + ... + 374797.

It is an arithmetic number, because the mean of its divisors is an integer number (3275490610).

Almost surely, 213101231223 is an apocalyptic number.

13101231223 is a deficient number, since it is larger than the sum of its proper divisors (731217).

13101231223 is an equidigital number, since it uses as much as digits as its factorization.

13101231223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731216.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13101231223 its reverse (32213210131), we get a palindrome (45314441354).

The spelling of 13101231223 in words is "thirteen billion, one hundred one million, two hundred thirty-one thousand, two hundred twenty-three".

Divisors: 1 18379 712837 13101231223