Base | Representation |
---|---|
bin | 111000010110111110… |
… | …1001101000001011011 |
3 | 102120101210111021100021 |
4 | 1300231331031001123 |
5 | 3440332201300011 |
6 | 131333411051311 |
7 | 11513144621350 |
oct | 1605575150133 |
9 | 376353437307 |
10 | 121030103131 |
11 | 47368379923 |
12 | 1b5588a0b37 |
13 | b54a734452 |
14 | 5c0208c627 |
15 | 3235631471 |
hex | 1c2df4d05b |
121030103131 has 8 divisors (see below), whose sum is σ = 144334036224. Its totient is φ = 99229649640.
The previous prime is 121030103087. The next prime is 121030103137. The reversal of 121030103131 is 131301030121.
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 121030103131 - 211 = 121030101083 is a prime.
It is a super-2 number, since 2×1210301031312 (a number of 23 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (121030103137) 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, 375869725 + ... + 375870046.
It is an arithmetic number, because the mean of its divisors is an integer number (18041754528).
Almost surely, 2121030103131 is an apocalyptic number.
121030103131 is a deficient number, since it is larger than the sum of its proper divisors (23303933093).
121030103131 is an equidigital number, since it uses as much as digits as its factorization.
121030103131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 751739801.
The product of its (nonzero) digits is 54, while the sum is 16.
Adding to 121030103131 its reverse (131301030121), we get a palindrome (252331133252).
The spelling of 121030103131 in words is "one hundred twenty-one billion, thirty million, one hundred three thousand, one hundred thirty-one".
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