Base | Representation |
---|---|
bin | 100101000011111011111 |
3 | 2021200212221 |
4 | 10220133133 |
5 | 302330211 |
6 | 42010211 |
7 | 13215421 |
oct | 4503737 |
9 | 2250787 |
10 | 1214431 |
11 | 75a469 |
12 | 4a6967 |
13 | 3369ca |
14 | 238811 |
15 | 18ec71 |
hex | 1287df |
1214431 has 2 divisors, whose sum is σ = 1214432. Its totient is φ = 1214430.
The previous prime is 1214417. The next prime is 1214441. The reversal of 1214431 is 1344121.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 1214431 - 219 = 690143 is a prime.
It is a super-2 number, since 2×12144312 = 2949685307522, which contains 22 as substring.
1214431 is a lucky number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1214401) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607215 + 607216.
It is an arithmetic number, because the mean of its divisors is an integer number (607216).
21214431 is an apocalyptic number.
1214431 is a deficient number, since it is larger than the sum of its proper divisors (1).
1214431 is an equidigital number, since it uses as much as digits as its factorization.
1214431 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 96, while the sum is 16.
The square root of 1214431 is about 1102.0122503856. The cubic root of 1214431 is about 106.6901391486.
Adding to 1214431 its reverse (1344121), we get a palindrome (2558552).
The spelling of 1214431 in words is "one million, two hundred fourteen thousand, four hundred thirty-one".
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