Base | Representation |
---|---|
bin | 111110101001010… |
… | …0101010000010111 |
3 | 12102111022211201210 |
4 | 1331102211100113 |
5 | 13301104220231 |
6 | 544325352503 |
7 | 103042621332 |
oct | 17522452027 |
9 | 5374284653 |
10 | 2102023191 |
11 | 9895a0154 |
12 | 4a7b68733 |
13 | 276648a08 |
14 | 15d255619 |
15 | c4816a46 |
hex | 7d4a5417 |
2102023191 has 16 divisors (see below), whose sum is σ = 2988921600. Its totient is φ = 1309423488.
The previous prime is 2102023151. The next prime is 2102023207. The reversal of 2102023191 is 1913202012.
It is not a de Polignac number, because 2102023191 - 26 = 2102023127 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2102023151) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141171 + ... + 155348.
It is an arithmetic number, because the mean of its divisors is an integer number (186807600).
Almost surely, 22102023191 is an apocalyptic number.
2102023191 is a deficient number, since it is larger than the sum of its proper divisors (886898409).
2102023191 is a wasteful number, since it uses less digits than its factorization.
2102023191 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 296678.
The product of its (nonzero) digits is 216, while the sum is 21.
The square root of 2102023191 is about 45847.8264588410. The cubic root of 2102023191 is about 1280.9902800121.
The spelling of 2102023191 in words is "two billion, one hundred two million, twenty-three thousand, one hundred ninety-one".
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