Base | Representation |
---|---|
bin | 10010101010111000… |
… | …10110100011101101 |
3 | 221212112212000120021 |
4 | 21111130112203231 |
5 | 131011444233011 |
6 | 4334340522141 |
7 | 503250516046 |
oct | 112534264355 |
9 | 27775760507 |
10 | 10023430381 |
11 | 4283a68668 |
12 | 1b389b0351 |
13 | c398020c3 |
14 | 6b13018cd |
15 | 3d9e8a471 |
hex | 2557168ed |
10023430381 has 2 divisors, whose sum is σ = 10023430382. Its totient is φ = 10023430380.
The previous prime is 10023430369. The next prime is 10023430427. The reversal of 10023430381 is 18303432001.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 9178598025 + 844832356 = 95805^2 + 29066^2 .
It is an emirp because it is prime and its reverse (18303432001) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 10023430381 - 29 = 10023429869 is a prime.
It is a super-2 number, since 2×100234303812 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (10023430481) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5011715190 + 5011715191.
It is an arithmetic number, because the mean of its divisors is an integer number (5011715191).
Almost surely, 210023430381 is an apocalyptic number.
It is an amenable number.
10023430381 is a deficient number, since it is larger than the sum of its proper divisors (1).
10023430381 is an equidigital number, since it uses as much as digits as its factorization.
10023430381 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1728, while the sum is 25.
Adding to 10023430381 its reverse (18303432001), we get a palindrome (28326862382).
The spelling of 10023430381 in words is "ten billion, twenty-three million, four hundred thirty thousand, three hundred eighty-one".
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