Base | Representation |
---|---|
bin | 1011100011010101… |
… | …1000100101100001 |
3 | 22000010002020010221 |
4 | 2320311120211201 |
5 | 22322324031311 |
6 | 1231413123041 |
7 | 136563040252 |
oct | 27065304541 |
9 | 8003066127 |
10 | 3101002081 |
11 | 1351486841 |
12 | 726629481 |
13 | 3a55b9198 |
14 | 215bb8b29 |
15 | 132395671 |
hex | b8d58961 |
3101002081 has 2 divisors, whose sum is σ = 3101002082. Its totient is φ = 3101002080.
The previous prime is 3101002007. The next prime is 3101002109. The reversal of 3101002081 is 1802001013.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 2896054225 + 204947856 = 53815^2 + 14316^2 .
It is an emirp because it is prime and its reverse (1802001013) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-3101002081 is a prime.
It is a super-2 number, since 2×31010020812 = 19232427812732661122, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (3101002481) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1550501040 + 1550501041.
It is an arithmetic number, because the mean of its divisors is an integer number (1550501041).
Almost surely, 23101002081 is an apocalyptic number.
It is an amenable number.
3101002081 is a deficient number, since it is larger than the sum of its proper divisors (1).
3101002081 is an equidigital number, since it uses as much as digits as its factorization.
3101002081 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 48, while the sum is 16.
The square root of 3101002081 is about 55686.6418542185. The cubic root of 3101002081 is about 1458.2568300882.
Adding to 3101002081 its reverse (1802001013), we get a palindrome (4903003094).
The spelling of 3101002081 in words is "three billion, one hundred one million, two thousand, eighty-one".
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