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12100232313 = 3213103420789
BaseRepresentation
bin10110100010011101…
…01110010001111001
31011020021201111020100
423101032232101321
5144240124413223
65320405550013
7605566164141
oct132116562171
934207644210
1012100232313
11514a2a16a4
122418415309
1311aab59ca0
1482b06d921
154ac46e043
hex2d13ae479

12100232313 has 12 divisors (see below), whose sum is σ = 18822583780. Its totient is φ = 7446296736.

The previous prime is 12100232233. The next prime is 12100232323. The reversal of 12100232313 is 31323200121.

12100232313 is a `hidden beast` number, since 121 + 0 + 0 + 232 + 313 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8122155129 + 3978077184 = 90123^2 + 63072^2 .

It is not a de Polignac number, because 12100232313 - 28 = 12100232057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12100232323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51710278 + ... + 51710511.

Almost surely, 212100232313 is an apocalyptic number.

12100232313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12100232313 is a deficient number, since it is larger than the sum of its proper divisors (6722351467).

12100232313 is a wasteful number, since it uses less digits than its factorization.

12100232313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103420808 (or 103420805 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12100232313 its reverse (31323200121), we get a palindrome (43423432434).

The spelling of 12100232313 in words is "twelve billion, one hundred million, two hundred thirty-two thousand, three hundred thirteen".

Divisors: 1 3 9 13 39 117 103420789 310262367 930787101 1344470257 4033410771 12100232313