Base | Representation |
---|---|
bin | 11000011100001001… |
… | …10000100010011001 |
3 | 1020212102112101211002 |
4 | 30032010300202121 |
5 | 203332440432142 |
6 | 10005553114345 |
7 | 643102626434 |
oct | 141604604231 |
9 | 36772471732 |
10 | 13121030297 |
11 | 56235302a1 |
12 | 26622589b5 |
13 | 131149986b |
14 | 8c687281b |
15 | 51bdaca32 |
hex | 30e130899 |
13121030297 has 2 divisors, whose sum is σ = 13121030298. Its totient is φ = 13121030296.
The previous prime is 13121030267. The next prime is 13121030303. The reversal of 13121030297 is 79203012131.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 7018920841 + 6102109456 = 83779^2 + 78116^2 .
It is an emirp because it is prime and its reverse (79203012131) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 13121030297 - 26 = 13121030233 is a prime.
It is a super-2 number, since 2×131210302972 (a number of 21 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (13121030227) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560515148 + 6560515149.
It is an arithmetic number, because the mean of its divisors is an integer number (6560515149).
Almost surely, 213121030297 is an apocalyptic number.
It is an amenable number.
13121030297 is a deficient number, since it is larger than the sum of its proper divisors (1).
13121030297 is an equidigital number, since it uses as much as digits as its factorization.
13121030297 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 2268, while the sum is 29.
The spelling of 13121030297 in words is "thirteen billion, one hundred twenty-one million, thirty thousand, two hundred ninety-seven".
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