Base | Representation |
---|---|
bin | 11100010001000111… |
… | …110011110110011011 |
3 | 2220100021200221022011 |
4 | 130101013303312123 |
5 | 444130104444011 |
6 | 21535445210351 |
7 | 2123103002452 |
oct | 342107636633 |
9 | 86307627264 |
10 | 30352031131 |
11 | 11965a26254 |
12 | 5a70a009b7 |
13 | 2b292ac946 |
14 | 167d0c3b99 |
15 | bc99b4621 |
hex | 7111f3d9b |
30352031131 has 2 divisors, whose sum is σ = 30352031132. Its totient is φ = 30352031130.
The previous prime is 30352031119. The next prime is 30352031207. The reversal of 30352031131 is 13113025303.
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-30352031131 is a prime.
It is a super-2 number, since 2×303520311312 (a number of 22 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (30352031231) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15176015565 + 15176015566.
It is an arithmetic number, because the mean of its divisors is an integer number (15176015566).
Almost surely, 230352031131 is an apocalyptic number.
30352031131 is a deficient number, since it is larger than the sum of its proper divisors (1).
30352031131 is an equidigital number, since it uses as much as digits as its factorization.
30352031131 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 810, while the sum is 22.
Adding to 30352031131 its reverse (13113025303), we get a palindrome (43465056434).
The spelling of 30352031131 in words is "thirty billion, three hundred fifty-two million, thirty-one thousand, one hundred thirty-one".
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