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13102430123 = 47278775109
BaseRepresentation
bin11000011001111011…
…10011011110101011
31020211010112102011202
430030331303132223
5203313210230443
610004050314415
7642455550506
oct141475633653
936733472152
1013102430123
115613a86752
122657b88a0b
13130a686643
148c41d013d
1551a4367b8
hex30cf737ab

13102430123 has 4 divisors (see below), whose sum is σ = 13381205280. Its totient is φ = 12823654968.

The previous prime is 13102430119. The next prime is 13102430137. The reversal of 13102430123 is 32103420131.

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 13102430123 - 22 = 13102430119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13102430095 and 13102430104.

It is not an unprimeable number, because it can be changed into a prime (13102430183) 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, 139387508 + ... + 139387601.

It is an arithmetic number, because the mean of its divisors is an integer number (3345301320).

Almost surely, 213102430123 is an apocalyptic number.

13102430123 is a deficient number, since it is larger than the sum of its proper divisors (278775157).

13102430123 is an equidigital number, since it uses as much as digits as its factorization.

13102430123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278775156.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13102430123 its reverse (32103420131), we get a palindrome (45205850254).

The spelling of 13102430123 in words is "thirteen billion, one hundred two million, four hundred thirty thousand, one hundred twenty-three".

Divisors: 1 47 278775109 13102430123