Base | Representation |
---|---|
bin | 1000001100011… |
… | …00000111101011 |
3 | 11210022220201100 |
4 | 10012030013223 |
5 | 120043400441 |
6 | 10453052443 |
7 | 1463131002 |
oct | 406140753 |
9 | 153286640 |
10 | 68731371 |
11 | 35884995 |
12 | 1b027123 |
13 | 11316267 |
14 | 91b1c39 |
15 | 6079cb6 |
hex | 418c1eb |
68731371 has 12 divisors (see below), whose sum is σ = 102481600. Its totient is φ = 44342640.
The previous prime is 68731349. The next prime is 68731423. The reversal of 68731371 is 17313786.
It is not a de Polignac number, because 68731371 - 25 = 68731339 is a prime.
It is a super-3 number, since 3×687313713 (a number of 24 digits) contains 333 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (68731321) 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, 122896 + ... + 123453.
Almost surely, 268731371 is an apocalyptic number.
68731371 is a deficient number, since it is larger than the sum of its proper divisors (33750229).
68731371 is a wasteful number, since it uses less digits than its factorization.
68731371 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 246386 (or 246383 counting only the distinct ones).
The product of its digits is 21168, while the sum is 36.
The square root of 68731371 is about 8290.4385288114. The cubic root of 68731371 is about 409.6236304161.
The spelling of 68731371 in words is "sixty-eight million, seven hundred thirty-one thousand, three hundred seventy-one".
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