Base | Representation |
---|---|
bin | 1111010010001… |
… | …0001001110111 |
3 | 11110121202211100 |
4 | 3310202021313 |
5 | 112402244111 |
6 | 10205541143 |
7 | 1405603206 |
oct | 364421167 |
9 | 143552740 |
10 | 64103031 |
11 | 33203613 |
12 | 195747b3 |
13 | 103856b5 |
14 | 872923d |
15 | 5963756 |
hex | 3d22277 |
64103031 has 6 divisors (see below), whose sum is σ = 92593280. Its totient is φ = 42735348.
The previous prime is 64103029. The next prime is 64103033. The reversal of 64103031 is 13030146.
It is an interprime number because it is at equal distance from previous prime (64103029) and next prime (64103033).
It is not a de Polignac number, because 64103031 - 21 = 64103029 is a prime.
It is a super-2 number, since 2×641030312 = 8218397166773922, 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 = 64102995 and 64103013.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (64103033) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3561271 + ... + 3561288.
Almost surely, 264103031 is an apocalyptic number.
64103031 is a deficient number, since it is larger than the sum of its proper divisors (28490249).
64103031 is a wasteful number, since it uses less digits than its factorization.
64103031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7122565 (or 7122562 counting only the distinct ones).
The product of its (nonzero) digits is 216, while the sum is 18.
The square root of 64103031 is about 8006.4368479368. The cubic root of 64103031 is about 400.2145328353.
Adding to 64103031 its reverse (13030146), we get a palindrome (77133177).
The spelling of 64103031 in words is "sixty-four million, one hundred three thousand, thirty-one".
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