Base | Representation |
---|---|
bin | 10010101010011… |
… | …111110101011011 |
3 | 210211012200001200 |
4 | 102222133311123 |
5 | 1120130132311 |
6 | 51023245243 |
7 | 10521364263 |
oct | 2252376533 |
9 | 724180050 |
10 | 313130331 |
11 | 1508324a8 |
12 | 88a49823 |
13 | 4cb47427 |
14 | 2d8307a3 |
15 | 1c754556 |
hex | 12a9fd5b |
313130331 has 12 divisors (see below), whose sum is σ = 454243608. Its totient is φ = 207856224.
The previous prime is 313130273. The next prime is 313130333. The reversal of 313130331 is 133031313.
It is not a de Polignac number, because 313130331 - 26 = 313130267 is a prime.
It is a super-2 number, since 2×3131303312 = 196101208384339122, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (313130333) 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, 72565 + ... + 76758.
It is an arithmetic number, because the mean of its divisors is an integer number (37853634).
Almost surely, 2313130331 is an apocalyptic number.
313130331 is a deficient number, since it is larger than the sum of its proper divisors (141113277).
313130331 is a wasteful number, since it uses less digits than its factorization.
313130331 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 149562 (or 149559 counting only the distinct ones).
The product of its (nonzero) digits is 243, while the sum is 18.
The square root of 313130331 is about 17695.4890014376. The cubic root of 313130331 is about 679.0603594752.
Adding to 313130331 its reverse (133031313), we get a palindrome (446161644).
The spelling of 313130331 in words is "three hundred thirteen million, one hundred thirty thousand, three hundred thirty-one".
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