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123102102213 = 3328116225399
BaseRepresentation
bin111001010100101110…
…1010000001011000101
3102202202012022201202000
41302221131100023011
54004103114232323
6132315145135513
711615404414116
oct1625135201305
9382665281660
10123102102213
1148230a22462
121ba3678a599
13b7baa9a1cc
145d5b32a20d
1533074b6e43
hex1ca97502c5

123102102213 has 16 divisors (see below), whose sum is σ = 183022512000. Its totient is φ = 81776005920.

The previous prime is 123102102181. The next prime is 123102102217. The reversal of 123102102213 is 312201201321.

123102102213 is a `hidden beast` number, since 1 + 231 + 0 + 210 + 221 + 3 = 666.

It is not a de Polignac number, because 123102102213 - 25 = 123102102181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123102102217) 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 15 ways as a sum of consecutive naturals, for example, 8105113 + ... + 8120286.

It is an arithmetic number, because the mean of its divisors is an integer number (11438907000).

Almost surely, 2123102102213 is an apocalyptic number.

It is an amenable number.

123102102213 is a deficient number, since it is larger than the sum of its proper divisors (59920409787).

123102102213 is a wasteful number, since it uses less digits than its factorization.

123102102213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16225689 (or 16225683 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 123102102213 its reverse (312201201321), we get a palindrome (435303303534).

The spelling of 123102102213 in words is "one hundred twenty-three billion, one hundred two million, one hundred two thousand, two hundred thirteen".

Divisors: 1 3 9 27 281 843 2529 7587 16225399 48676197 146028591 438085773 4559337119 13678011357 41034034071 123102102213