Base | Representation |
---|---|
bin | 11100001001111110… |
… | …110011110001110111 |
3 | 2220000221021110110102 |
4 | 130021332303301313 |
5 | 443403422343111 |
6 | 21515525344315 |
7 | 2120116503152 |
oct | 341176636167 |
9 | 86027243412 |
10 | 30232231031 |
11 | 11904340702 |
12 | 5a3886809b |
13 | 2b0a525a02 |
14 | 166b21ac99 |
15 | bbe1ed13b |
hex | 709fb3c77 |
30232231031 has 2 divisors, whose sum is σ = 30232231032. Its totient is φ = 30232231030.
The previous prime is 30232230983. The next prime is 30232231033. The reversal of 30232231031 is 13013223203.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 30232231031 - 214 = 30232214647 is a prime.
It is a super-2 number, since 2×302322310312 (a number of 22 digits) contains 22 as substring.
Together with 30232231033, it forms a pair of twin primes.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 30232230994 and 30232231012.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30232231033) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15116115515 + 15116115516.
It is an arithmetic number, because the mean of its divisors is an integer number (15116115516).
Almost surely, 230232231031 is an apocalyptic number.
30232231031 is a deficient number, since it is larger than the sum of its proper divisors (1).
30232231031 is an equidigital number, since it uses as much as digits as its factorization.
30232231031 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 648, while the sum is 20.
Adding to 30232231031 its reverse (13013223203), we get a palindrome (43245454234).
The spelling of 30232231031 in words is "thirty billion, two hundred thirty-two million, two hundred thirty-one thousand, thirty-one".
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