Base | Representation |
---|---|
bin | 110100010001… |
… | …111101000111 |
3 | 221210021202202 |
4 | 310101331013 |
5 | 12002030111 |
6 | 1205425115 |
7 | 224330234 |
oct | 64217507 |
9 | 27707682 |
10 | 13705031 |
11 | 781087a |
12 | 470b19b |
13 | 2abb0b2 |
14 | 1b6a78b |
15 | 130ab3b |
hex | d11f47 |
13705031 has 2 divisors, whose sum is σ = 13705032. Its totient is φ = 13705030.
The previous prime is 13704997. The next prime is 13705057. The reversal of 13705031 is 13050731.
It is a happy number.
It is a strong prime.
It is an emirp because it is prime and its reverse (13050731) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 13705031 - 26 = 13704967 is a prime.
It is a super-2 number, since 2×137050312 = 375655749421922, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 13704994 and 13705012.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (13705231) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6852515 + 6852516.
It is an arithmetic number, because the mean of its divisors is an integer number (6852516).
Almost surely, 213705031 is an apocalyptic number.
13705031 is a deficient number, since it is larger than the sum of its proper divisors (1).
13705031 is an equidigital number, since it uses as much as digits as its factorization.
13705031 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 315, while the sum is 20.
The square root of 13705031 is about 3702.0306589762. The cubic root of 13705031 is about 239.3095374853.
Adding to 13705031 its reverse (13050731), we get a palindrome (26755762).
The spelling of 13705031 in words is "thirteen million, seven hundred five thousand, thirty-one".
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