Base | Representation |
---|---|
bin | 111110100111100… |
… | …1001001111101111 |
3 | 12102102122001120111 |
4 | 1331033021033233 |
5 | 13300341401111 |
6 | 544254200451 |
7 | 103032146131 |
oct | 17517111757 |
9 | 5372561514 |
10 | 2101122031 |
11 | 989035098 |
12 | 4a77b3127 |
13 | 2763c1798 |
14 | 15d09d051 |
15 | c46d9a21 |
hex | 7d3c93ef |
2101122031 has 2 divisors, whose sum is σ = 2101122032. Its totient is φ = 2101122030.
The previous prime is 2101122017. The next prime is 2101122047. The reversal of 2101122031 is 1302211012.
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-2101122031 is a prime.
It is a super-2 number, since 2×21011220312 = 8829427578307129922, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2101122091) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050561015 + 1050561016.
It is an arithmetic number, because the mean of its divisors is an integer number (1050561016).
Almost surely, 22101122031 is an apocalyptic number.
2101122031 is a deficient number, since it is larger than the sum of its proper divisors (1).
2101122031 is an equidigital number, since it uses as much as digits as its factorization.
2101122031 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 24, while the sum is 13.
The square root of 2101122031 is about 45837.9976766001. The cubic root of 2101122031 is about 1280.8071957326.
Adding to 2101122031 its reverse (1302211012), we get a palindrome (3403333043).
The spelling of 2101122031 in words is "two billion, one hundred one million, one hundred twenty-two thousand, thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.076 sec. • engine limits •