Base | Representation |
---|---|
bin | 110101111001000… |
… | …1010111010101111 |
3 | 11200000122212111202 |
4 | 1223302022322233 |
5 | 12200412022111 |
6 | 455234240115 |
7 | 62545262366 |
oct | 15362127257 |
9 | 4600585452 |
10 | 1808314031 |
11 | 848823107 |
12 | 42572603b |
13 | 22a841404 |
14 | 13223c7dd |
15 | a8b4bb3b |
hex | 6bc8aeaf |
1808314031 has 2 divisors, whose sum is σ = 1808314032. Its totient is φ = 1808314030.
The previous prime is 1808313977. The next prime is 1808314063. The reversal of 1808314031 is 1304138081.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 1808314031 - 218 = 1808051887 is a prime.
It is a super-2 number, since 2×18083140312 = 6539999269422937922, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 1808313985 and 1808314003.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1808314091) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 904157015 + 904157016.
It is an arithmetic number, because the mean of its divisors is an integer number (904157016).
Almost surely, 21808314031 is an apocalyptic number.
1808314031 is a deficient number, since it is larger than the sum of its proper divisors (1).
1808314031 is an equidigital number, since it uses as much as digits as its factorization.
1808314031 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 2304, while the sum is 29.
The square root of 1808314031 is about 42524.2757845445. The cubic root of 1808314031 is about 1218.3103976117.
The spelling of 1808314031 in words is "one billion, eight hundred eight million, three hundred fourteen thousand, thirty-one".
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