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13103002123 = 113115955771
BaseRepresentation
bin11000011001111111…
…11111001000001011
31020211011121110210221
430030333333020023
5203313332031443
610004110450511
7642463452241
oct141477771013
936734543727
1013103002123
115614337482
122658203a37
13130a826ac3
148c42dc791
1551a4eaeed
hex30cfff20b

13103002123 has 4 divisors (see below), whose sum is σ = 13218958008. Its totient is φ = 12987046240.

The previous prime is 13103002117. The next prime is 13103002151. The reversal of 13103002123 is 32120030131.

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 13103002123 - 213 = 13102993931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13103002097 and 13103002106.

It is not an unprimeable number, because it can be changed into a prime (13103002193) 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, 57977773 + ... + 57977998.

It is an arithmetic number, because the mean of its divisors is an integer number (3304739502).

Almost surely, 213103002123 is an apocalyptic number.

13103002123 is a deficient number, since it is larger than the sum of its proper divisors (115955885).

13103002123 is a wasteful number, since it uses less digits than its factorization.

13103002123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115955884.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 13103002123 its reverse (32120030131), we get a palindrome (45223032254).

The spelling of 13103002123 in words is "thirteen billion, one hundred three million, two thousand, one hundred twenty-three".

Divisors: 1 113 115955771 13103002123