Base | Representation |
---|---|
bin | 1100110001111… |
… | …10000101000111 |
3 | 21110201210010212 |
4 | 12120332011013 |
5 | 204421142111 |
6 | 14345510035 |
7 | 2441155526 |
oct | 630760507 |
9 | 243653125 |
10 | 107209031 |
11 | 55575806 |
12 | 2baa231b |
13 | 19298bc7 |
14 | 1034a4bd |
15 | 962a98b |
hex | 663e147 |
107209031 has 2 divisors, whose sum is σ = 107209032. Its totient is φ = 107209030.
The previous prime is 107209013. The next prime is 107209033. The reversal of 107209031 is 130902701.
Together with previous prime (107209013) it forms an Ormiston pair, because they use the same digits, order apart.
It is a strong prime.
It is an emirp because it is prime and its reverse (130902701) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 107209031 - 26 = 107208967 is a prime.
It is a super-2 number, since 2×1072090312 = 22987552655917922, which contains 22 as substring.
Together with 107209033, it forms a pair of twin primes.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 107208988 and 107209006.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (107209033) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53604515 + 53604516.
It is an arithmetic number, because the mean of its divisors is an integer number (53604516).
Almost surely, 2107209031 is an apocalyptic number.
107209031 is a deficient number, since it is larger than the sum of its proper divisors (1).
107209031 is an equidigital number, since it uses as much as digits as its factorization.
107209031 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 378, while the sum is 23.
The square root of 107209031 is about 10354.1793977118. The cubic root of 107209031 is about 475.0548871016.
The spelling of 107209031 in words is "one hundred seven million, two hundred nine thousand, thirty-one".
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