Base | Representation |
---|---|
bin | 10110100010110011… |
… | …10001111101111001 |
3 | 1011020111011202111011 |
4 | 23101121301331321 |
5 | 144241400143001 |
6 | 5320552033521 |
7 | 605632626133 |
oct | 132131617571 |
9 | 34214152434 |
10 | 12103131001 |
11 | 51509a1505 |
12 | 24193928a1 |
13 | 11ab6334a0 |
14 | 82b5c6053 |
15 | 4ac842d51 |
hex | 2d1671f79 |
12103131001 has 8 divisors (see below), whose sum is σ = 13600843200. Its totient is φ = 10686376272.
The previous prime is 12103130989. The next prime is 12103131017. The reversal of 12103131001 is 10013130121.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 12103131001 - 25 = 12103130969 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (13).
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (12103131031) 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, 20239051 + ... + 20239648.
It is an arithmetic number, because the mean of its divisors is an integer number (1700105400).
Almost surely, 212103131001 is an apocalyptic number.
It is an amenable number.
12103131001 is a deficient number, since it is larger than the sum of its proper divisors (1497712199).
12103131001 is a wasteful number, since it uses less digits than its factorization.
12103131001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 40478735.
The product of its (nonzero) digits is 18, while the sum is 13.
Adding to 12103131001 its reverse (10013130121), we get a palindrome (22116261122).
The spelling of 12103131001 in words is "twelve billion, one hundred three million, one hundred thirty-one thousand, one".
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