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12730103 = 32093967
BaseRepresentation
bin110000100011…
…111011110111
3212221202102022
4300203323313
511224330403
61132503355
7213130001
oct60437367
925852368
1012730103
117205351
12431ab5b
132839409
141995371
1511b6d38
hexc23ef7

12730103 has 4 divisors (see below), whose sum is σ = 12737280. Its totient is φ = 12722928.

The previous prime is 12730097. The next prime is 12730121. The reversal of 12730103 is 30103721.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12730103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12730153) 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, 1226 + ... + 5192.

It is an arithmetic number, because the mean of its divisors is an integer number (3184320).

Almost surely, 212730103 is an apocalyptic number.

12730103 is a deficient number, since it is larger than the sum of its proper divisors (7177).

12730103 is an equidigital number, since it uses as much as digits as its factorization.

12730103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7176.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 12730103 is about 3567.9269891633. The cubic root of 12730103 is about 233.4948498483.

Adding to 12730103 its reverse (30103721), we get a palindrome (42833824).

The spelling of 12730103 in words is "twelve million, seven hundred thirty thousand, one hundred three".

Divisors: 1 3209 3967 12730103