Base | Representation |
---|---|
bin | 111011101010110… |
… | …0001010100110111 |
3 | 12011112100202100112 |
4 | 1313111201110313 |
5 | 13100021131411 |
6 | 530400333235 |
7 | 100420553243 |
oct | 16725412467 |
9 | 5145322315 |
10 | 2002130231 |
11 | 938172092 |
12 | 47a61421b |
13 | 25ba41b5a |
14 | 14dc91423 |
15 | bab83b8b |
hex | 77561537 |
2002130231 has 2 divisors, whose sum is σ = 2002130232. Its totient is φ = 2002130230.
The previous prime is 2002130213. The next prime is 2002130281. The reversal of 2002130231 is 1320312002.
It is a happy number.
Together with previous prime (2002130213) it forms an Ormiston pair, because they use the same digits, order apart.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 2002130231 - 26 = 2002130167 is a prime.
It is a super-2 number, since 2×20021302312 = 8017050923768226722, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2002130201) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001065115 + 1001065116.
It is an arithmetic number, because the mean of its divisors is an integer number (1001065116).
Almost surely, 22002130231 is an apocalyptic number.
2002130231 is a deficient number, since it is larger than the sum of its proper divisors (1).
2002130231 is an equidigital number, since it uses as much as digits as its factorization.
2002130231 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 72, while the sum is 14.
The square root of 2002130231 is about 44745.1699181040. The cubic root of 2002130231 is about 1260.3682116525.
Adding to 2002130231 its reverse (1320312002), we get a palindrome (3322442233).
The spelling of 2002130231 in words is "two billion, two million, one hundred thirty thousand, two hundred thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.070 sec. • engine limits •