Base | Representation |
---|---|
bin | 11100001110110011… |
… | …010101111001011011 |
3 | 2220020120110121002200 |
4 | 130032303111321123 |
5 | 444040124024011 |
6 | 21531535101243 |
7 | 2122121123202 |
oct | 341663257133 |
9 | 86216417080 |
10 | 30313111131 |
11 | 11945a63066 |
12 | 5a5b971823 |
13 | 2b21203864 |
14 | 1677c72239 |
15 | bc6377856 |
hex | 70ecd5e5b |
30313111131 has 6 divisors (see below), whose sum is σ = 43785604980. Its totient is φ = 20208740748.
The previous prime is 30313111123. The next prime is 30313111159. The reversal of 30313111131 is 13111131303.
It is not a de Polignac number, because 30313111131 - 23 = 30313111123 is a prime.
It is a super-2 number, since 2×303131111312 (a number of 22 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (30313111121) 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, 1684061721 + ... + 1684061738.
It is an arithmetic number, because the mean of its divisors is an integer number (7297600830).
Almost surely, 230313111131 is an apocalyptic number.
30313111131 is a deficient number, since it is larger than the sum of its proper divisors (13472493849).
30313111131 is a wasteful number, since it uses less digits than its factorization.
30313111131 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3368123465 (or 3368123462 counting only the distinct ones).
The product of its (nonzero) digits is 81, while the sum is 18.
Adding to 30313111131 its reverse (13111131303), we get a palindrome (43424242434).
The spelling of 30313111131 in words is "thirty billion, three hundred thirteen million, one hundred eleven thousand, one hundred thirty-one".
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