Base | Representation |
---|---|
bin | 10110101001101… |
… | …111110010111111 |
3 | 222111010011012121 |
4 | 112221233302333 |
5 | 1234242324211 |
6 | 101413343411 |
7 | 12263210266 |
oct | 2651576277 |
9 | 874104177 |
10 | 380042431 |
11 | 18558455a |
12 | a7337b67 |
13 | 609745a2 |
14 | 3868b5dd |
15 | 23570271 |
hex | 16a6fcbf |
380042431 has 2 divisors, whose sum is σ = 380042432. Its totient is φ = 380042430.
The previous prime is 380042357. The next prime is 380042437. The reversal of 380042431 is 134240083.
It is a strong prime.
It is an emirp because it is prime and its reverse (134240083) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 380042431 - 227 = 245824703 is a prime.
It is a super-2 number, since 2×3800424312 = 288864498720779522, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 380042396 and 380042405.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (380042437) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190021215 + 190021216.
It is an arithmetic number, because the mean of its divisors is an integer number (190021216).
Almost surely, 2380042431 is an apocalyptic number.
380042431 is a deficient number, since it is larger than the sum of its proper divisors (1).
380042431 is an equidigital number, since it uses as much as digits as its factorization.
380042431 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 2304, while the sum is 25.
The square root of 380042431 is about 19494.6769914251. The cubic root of 380042431 is about 724.3426024962.
The spelling of 380042431 in words is "three hundred eighty million, forty-two thousand, four hundred thirty-one".
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