Base | Representation |
---|---|
bin | 10010101011110100… |
… | …00001111010001001 |
3 | 221220002111021100210 |
4 | 21111322001322021 |
5 | 131020442210441 |
6 | 4335215351333 |
7 | 503403610362 |
oct | 112572017211 |
9 | 27802437323 |
10 | 10031210121 |
11 | 42883a16a9 |
12 | 1b3b522549 |
13 | c3b2c71ba |
14 | 6b2368b69 |
15 | 3da9c5616 |
hex | 255e81e89 |
10031210121 has 8 divisors (see below), whose sum is σ = 13375484640. Its totient is φ = 6687204512.
The previous prime is 10031210083. The next prime is 10031210153. The reversal of 10031210121 is 12101213001.
10031210121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
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 10031210121 - 214 = 10031193737 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 10031210097 and 10031210106.
It is not an unprimeable number, because it can be changed into a prime (10031210521) 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, 48061 + ... + 149573.
It is an arithmetic number, because the mean of its divisors is an integer number (1671935580).
Almost surely, 210031210121 is an apocalyptic number.
It is an amenable number.
10031210121 is a deficient number, since it is larger than the sum of its proper divisors (3344274519).
10031210121 is a wasteful number, since it uses less digits than its factorization.
10031210121 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 134455.
The product of its (nonzero) digits is 12, while the sum is 12.
Adding to 10031210121 its reverse (12101213001), we get a palindrome (22132423122).
The spelling of 10031210121 in words is "ten billion, thirty-one million, two hundred ten thousand, one hundred twenty-one".
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