Base | Representation |
---|---|
bin | 10101011110000… |
… | …10001110001111 |
3 | 110112220010112121 |
4 | 22233002032033 |
5 | 332101231111 |
6 | 25512113411 |
7 | 4314561544 |
oct | 1257021617 |
9 | 415803477 |
10 | 180102031 |
11 | 9273235a |
12 | 50395867 |
13 | 2b40b465 |
14 | 19cc2bcb |
15 | 10c28871 |
hex | abc238f |
180102031 has 2 divisors, whose sum is σ = 180102032. Its totient is φ = 180102030.
The previous prime is 180102019. The next prime is 180102037. The reversal of 180102031 is 130201081.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 180102031 - 213 = 180093839 is a prime.
It is a super-2 number, since 2×1801020312 = 64873483140649922, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 180101996 and 180102014.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (180102037) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90051015 + 90051016.
It is an arithmetic number, because the mean of its divisors is an integer number (90051016).
Almost surely, 2180102031 is an apocalyptic number.
180102031 is a deficient number, since it is larger than the sum of its proper divisors (1).
180102031 is an equidigital number, since it uses as much as digits as its factorization.
180102031 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 180102031 is about 13420.2097971679. The cubic root of 180102031 is about 564.7282803410.
The spelling of 180102031 in words is "one hundred eighty million, one hundred two thousand, thirty-one".
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