Base | Representation |
---|---|
bin | 1011111011101111101001… |
… | …0101010011010010101111 |
3 | 1201110100200010211001220121 |
4 | 2332323322111103102233 |
5 | 3204433332140310111 |
6 | 43523415025425411 |
7 | 2522651232614446 |
oct | 276737225232257 |
9 | 51410603731817 |
10 | 13121030010031 |
11 | 41a9663415679 |
12 | 157ab3a49b267 |
13 | 742400389378 |
14 | 3350c008bd5d |
15 | 17b494c9a871 |
hex | beefa5534af |
13121030010031 has 8 divisors (see below), whose sum is σ = 13123120437504. Its totient is φ = 13118939750400.
The previous prime is 13121030009953. The next prime is 13121030010071. The reversal of 13121030010031 is 13001003012131.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 13121030010031 - 223 = 13121021621423 is a prime.
It is a super-2 number, since 2×131210300100312 (a number of 27 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 13121030009987 and 13121030010014.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13121030010071) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345717106 + ... + 345755056.
It is an arithmetic number, because the mean of its divisors is an integer number (1640390054688).
Almost surely, 213121030010031 is an apocalyptic number.
13121030010031 is a deficient number, since it is larger than the sum of its proper divisors (2090427473).
13121030010031 is an equidigital number, since it uses as much as digits as its factorization.
13121030010031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 83921.
The product of its (nonzero) digits is 54, while the sum is 16.
Adding to 13121030010031 its reverse (13001003012131), we get a palindrome (26122033022162).
The spelling of 13121030010031 in words is "thirteen trillion, one hundred twenty-one billion, thirty million, ten thousand, thirty-one".
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