Base | Representation |
---|---|
bin | 10010111111111101… |
… | …10011010000010101 |
3 | 222022212112112010201 |
4 | 21133332303100111 |
5 | 131342224423411 |
6 | 4404054220501 |
7 | 510525356401 |
oct | 113776632025 |
9 | 28285475121 |
10 | 10200232981 |
11 | 4364847014 |
12 | 1b88054731 |
13 | c67326823 |
14 | 6ca9a6101 |
15 | 3ea7613c1 |
hex | 25ffb3415 |
10200232981 has 2 divisors, whose sum is σ = 10200232982. Its totient is φ = 10200232980.
The previous prime is 10200232979. The next prime is 10200233023. The reversal of 10200232981 is 18923200201.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 9827549956 + 372683025 = 99134^2 + 19305^2 .
It is an emirp because it is prime and its reverse (18923200201) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 10200232981 - 21 = 10200232979 is a prime.
It is a super-2 number, since 2×102002329812 (a number of 21 digits) contains 22 as substring.
Together with 10200232979, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (10200232921) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100116490 + 5100116491.
It is an arithmetic number, because the mean of its divisors is an integer number (5100116491).
Almost surely, 210200232981 is an apocalyptic number.
It is an amenable number.
10200232981 is a deficient number, since it is larger than the sum of its proper divisors (1).
10200232981 is an equidigital number, since it uses as much as digits as its factorization.
10200232981 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 28.
The spelling of 10200232981 in words is "ten billion, two hundred million, two hundred thirty-two thousand, nine hundred eighty-one".
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