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12131101413 = 321347900157
BaseRepresentation
bin10110100110001000…
…11110101011100101
31011022102210210200100
423103010132223211
5144321030221123
65323431334313
7606422442414
oct132304365345
934272723610
1012131101413
115165766052
122426821399
1311b4377722
148311c747b
154b001a643
hex2d311eae5

12131101413 has 6 divisors (see below), whose sum is σ = 17522702054. Its totient is φ = 8087400936.

The previous prime is 12131101403. The next prime is 12131101421. The reversal of 12131101413 is 31410113121.

It is a happy number.

12131101413 is a `hidden beast` number, since 121 + 31 + 101 + 413 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11986308324 + 144793089 = 109482^2 + 12033^2 .

It is not a de Polignac number, because 12131101413 - 216 = 12131035877 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 (12131101403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 673950070 + ... + 673950087.

Almost surely, 212131101413 is an apocalyptic number.

It is an amenable number.

12131101413 is a deficient number, since it is larger than the sum of its proper divisors (5391600641).

12131101413 is a wasteful number, since it uses less digits than its factorization.

12131101413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347900163 (or 1347900160 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 12131101413 its reverse (31410113121), we get a palindrome (43541214534).

The spelling of 12131101413 in words is "twelve billion, one hundred thirty-one million, one hundred one thousand, four hundred thirteen".

Divisors: 1 3 9 1347900157 4043700471 12131101413