Base | Representation |
---|---|
bin | 111101000010101… |
… | …111110101111111 |
3 | 2122101002012211201 |
4 | 331002233311333 |
5 | 4044134133211 |
6 | 245342400331 |
7 | 34243652002 |
oct | 7502576577 |
9 | 2571065751 |
10 | 1024130431 |
11 | 486105395 |
12 | 246b900a7 |
13 | 13423864c |
14 | 9a02d539 |
15 | 5ed9b0c1 |
hex | 3d0afd7f |
1024130431 has 4 divisors (see below), whose sum is σ = 1049109264. Its totient is φ = 999151600.
The previous prime is 1024130377. The next prime is 1024130449. The reversal of 1024130431 is 1340314201.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1340314201 = 647 ⋅2071583.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-1024130431 is a prime.
It is a super-2 number, since 2×10241304312 = 2097686279400491522, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 1024130399 and 1024130408.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1024130461) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12489355 + ... + 12489436.
It is an arithmetic number, because the mean of its divisors is an integer number (262277316).
Almost surely, 21024130431 is an apocalyptic number.
1024130431 is a deficient number, since it is larger than the sum of its proper divisors (24978833).
1024130431 is an equidigital number, since it uses as much as digits as its factorization.
1024130431 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 24978832.
The product of its (nonzero) digits is 288, while the sum is 19.
The square root of 1024130431 is about 32002.0379194826. The cubic root of 1024130431 is about 1007.9796330893.
Adding to 1024130431 its reverse (1340314201), we get a palindrome (2364444632).
The spelling of 1024130431 in words is "one billion, twenty-four million, one hundred thirty thousand, four hundred thirty-one".
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