Base | Representation |
---|---|
bin | 101111111110110101… |
… | …0100010000011010101 |
3 | 100211222001000000111211 |
4 | 1133331222202003111 |
5 | 3142011222023411 |
6 | 115200321301421 |
7 | 10305266554264 |
oct | 1377552420325 |
9 | 324861000454 |
10 | 103040032981 |
11 | 3a776459956 |
12 | 17b77a94871 |
13 | 994159c822 |
14 | 4db6ac85db |
15 | 2a3108a221 |
hex | 17fdaa20d5 |
103040032981 has 2 divisors, whose sum is σ = 103040032982. Its totient is φ = 103040032980.
The previous prime is 103040032967. The next prime is 103040033039. The reversal of 103040032981 is 189230040301.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 102890826756 + 149206225 = 320766^2 + 12215^2 .
It is an emirp because it is prime and its reverse (189230040301) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-103040032981 is a prime.
It is a super-2 number, since 2×1030400329812 (a number of 23 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (103040002981) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51520016490 + 51520016491.
It is an arithmetic number, because the mean of its divisors is an integer number (51520016491).
Almost surely, 2103040032981 is an apocalyptic number.
It is an amenable number.
103040032981 is a deficient number, since it is larger than the sum of its proper divisors (1).
103040032981 is an equidigital number, since it uses as much as digits as its factorization.
103040032981 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 5184, while the sum is 31.
The spelling of 103040032981 in words is "one hundred three billion, forty million, thirty-two thousand, nine hundred eighty-one".
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