Base | Representation |
---|---|
bin | 111000011111000011… |
… | …0101001001010001011 |
3 | 102121002200020220222222 |
4 | 1300332012221022023 |
5 | 3441411024410011 |
6 | 131420325404255 |
7 | 11522644412414 |
oct | 1607606511213 |
9 | 377080226888 |
10 | 121301013131 |
11 | 47497294591 |
12 | 1b61356968b |
13 | b5918b851c |
14 | 5c2a04c80b |
15 | 324e2e5ddb |
hex | 1c3e1a928b |
121301013131 has 8 divisors (see below), whose sum is σ = 127839689280. Its totient is φ = 114777778248.
The previous prime is 121301013077. The next prime is 121301013151. The reversal of 121301013131 is 131310103121.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-121301013131 is a prime.
It is a super-2 number, since 2×1213010131312 (a number of 23 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (121301013151) 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, 3844181 + ... + 3875606.
It is an arithmetic number, because the mean of its divisors is an integer number (15979961160).
Almost surely, 2121301013131 is an apocalyptic number.
121301013131 is a deficient number, since it is larger than the sum of its proper divisors (6538676149).
121301013131 is an equidigital number, since it uses as much as digits as its factorization.
121301013131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7720633.
The product of its (nonzero) digits is 54, while the sum is 17.
Adding to 121301013131 its reverse (131310103121), we get a palindrome (252611116252).
The spelling of 121301013131 in words is "one hundred twenty-one billion, three hundred one million, thirteen thousand, one hundred thirty-one".
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