Base | Representation |
---|---|
bin | 1011101101110110… |
… | …1110001000100011 |
3 | 22010012010011222222 |
4 | 2323131232020203 |
5 | 22420123134111 |
6 | 1240031021255 |
7 | 140640111524 |
oct | 27335561043 |
9 | 8105104888 |
10 | 3145130531 |
11 | 1374387134 |
12 | 73936a82b |
13 | 3b1799baa |
14 | 21b9c484b |
15 | 1361b07db |
hex | bb76e223 |
3145130531 has 2 divisors, whose sum is σ = 3145130532. Its totient is φ = 3145130530.
The previous prime is 3145130519. The next prime is 3145130557. The reversal of 3145130531 is 1350315413.
It is an a-pointer prime, because the next prime (3145130557) can be obtained adding 3145130531 to its sum of digits (26).
It is a weak prime.
It is an emirp because it is prime and its reverse (1350315413) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-3145130531 is a prime.
It is a super-3 number, since 3×31451305313 (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a self number, because there is not a number n which added to its sum of digits gives 3145130531.
It is not a weakly prime, because it can be changed into another prime (3145136531) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1572565265 + 1572565266.
It is an arithmetic number, because the mean of its divisors is an integer number (1572565266).
Almost surely, 23145130531 is an apocalyptic number.
3145130531 is a deficient number, since it is larger than the sum of its proper divisors (1).
3145130531 is an equidigital number, since it uses as much as digits as its factorization.
3145130531 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 2700, while the sum is 26.
The square root of 3145130531 is about 56081.4633457438. The cubic root of 3145130531 is about 1465.1414604788.
Adding to 3145130531 its reverse (1350315413), we get a palindrome (4495445944).
The spelling of 3145130531 in words is "three billion, one hundred forty-five million, one hundred thirty thousand, five hundred thirty-one".
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