Base | Representation |
---|---|
bin | 11101000101011101… |
… | …110011100100111011 |
3 | 2222121111011011112202 |
4 | 131011131303210323 |
5 | 1002424413244121 |
6 | 22202535500415 |
7 | 2153625265646 |
oct | 350535634473 |
9 | 88544134482 |
10 | 31230212411 |
11 | 12276705902 |
12 | 6076b2770b |
13 | 2c39207138 |
14 | 17239a0a5d |
15 | c2bb3140b |
hex | 74577393b |
31230212411 has 2 divisors, whose sum is σ = 31230212412. Its totient is φ = 31230212410.
The previous prime is 31230212399. The next prime is 31230212413. The reversal of 31230212411 is 11421203213.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 31230212411 - 210 = 31230211387 is a prime.
Together with 31230212413, it forms a pair of twin primes.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (31230212413) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615106205 + 15615106206.
It is an arithmetic number, because the mean of its divisors is an integer number (15615106206).
Almost surely, 231230212411 is an apocalyptic number.
31230212411 is a deficient number, since it is larger than the sum of its proper divisors (1).
31230212411 is an equidigital number, since it uses as much as digits as its factorization.
31230212411 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 288, while the sum is 20.
Adding to 31230212411 its reverse (11421203213), we get a palindrome (42651415624).
The spelling of 31230212411 in words is "thirty-one billion, two hundred thirty million, two hundred twelve thousand, four hundred eleven".
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