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12102311313 = 321344701257
BaseRepresentation
bin10110100010101101…
…01001110110010001
31011020102122010002100
423101112221312101
5144241142430223
65320522311013
7605622643311
oct132126516621
934212563070
1012102311313
115150491684
122419058469
1311ab407371
1482b451441
154ac730043
hex2d15a9d91

12102311313 has 6 divisors (see below), whose sum is σ = 17481116354. Its totient is φ = 8068207536.

The previous prime is 12102311303. The next prime is 12102311317. The reversal of 12102311313 is 31311320121.

12102311313 is a `hidden beast` number, since 121 + 0 + 231 + 1 + 313 = 666.

12102311313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10876821264 + 1225490049 = 104292^2 + 35007^2 .

It is not a de Polignac number, because 12102311313 - 24 = 12102311297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12102311317) 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 5 ways as a sum of consecutive naturals, for example, 672350620 + ... + 672350637.

Almost surely, 212102311313 is an apocalyptic number.

It is an amenable number.

12102311313 is a deficient number, since it is larger than the sum of its proper divisors (5378805041).

12102311313 is a wasteful number, since it uses less digits than its factorization.

12102311313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344701263 (or 1344701260 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 12102311313 its reverse (31311320121), we get a palindrome (43413631434).

The spelling of 12102311313 in words is "twelve billion, one hundred two million, three hundred eleven thousand, three hundred thirteen".

Divisors: 1 3 9 1344701257 4034103771 12102311313