Base | Representation |
---|---|
bin | 111111110011101… |
… | …1000101101110111 |
3 | 12112012201122210002 |
4 | 1333213120231313 |
5 | 13341101000122 |
6 | 552241421515 |
7 | 104025315503 |
oct | 17747305567 |
9 | 5465648702 |
10 | 2141031287 |
11 | 9a961354a |
12 | 4b903a89b |
13 | 281755c25 |
14 | 1644cb303 |
15 | c7e6e992 |
hex | 7f9d8b77 |
2141031287 has 2 divisors, whose sum is σ = 2141031288. Its totient is φ = 2141031286.
The previous prime is 2141031281. The next prime is 2141031313. The reversal of 2141031287 is 7821301412.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 2141031287 - 24 = 2141031271 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2141031281) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070515643 + 1070515644.
It is an arithmetic number, because the mean of its divisors is an integer number (1070515644).
Almost surely, 22141031287 is an apocalyptic number.
2141031287 is a deficient number, since it is larger than the sum of its proper divisors (1).
2141031287 is an equidigital number, since it uses as much as digits as its factorization.
2141031287 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 2688, while the sum is 29.
The square root of 2141031287 is about 46271.2792885608. The cubic root of 2141031287 is about 1288.8657150629.
Adding to 2141031287 its reverse (7821301412), we get a palindrome (9962332699).
The spelling of 2141031287 in words is "two billion, one hundred forty-one million, thirty-one thousand, two hundred eighty-seven".
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