Base | Representation |
---|---|
bin | 11000011100001100… |
… | …11111100001101011 |
3 | 1020212110101111102111 |
4 | 30032012133201223 |
5 | 203333100004112 |
6 | 10010010543151 |
7 | 643106532016 |
oct | 141606374153 |
9 | 36773344374 |
10 | 13121484907 |
11 | 5623810903 |
12 | 2662437ab7 |
13 | 13115c876b |
14 | 8c695037d |
15 | 51be4c5a7 |
hex | 30e19f86b |
13121484907 has 2 divisors, whose sum is σ = 13121484908. Its totient is φ = 13121484906.
The previous prime is 13121484847. The next prime is 13121484923. The reversal of 13121484907 is 70948412131.
It is a strong prime.
It is an emirp because it is prime and its reverse (70948412131) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-13121484907 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 13121484907.
It is not a weakly prime, because it can be changed into another prime (13121484947) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560742453 + 6560742454.
It is an arithmetic number, because the mean of its divisors is an integer number (6560742454).
Almost surely, 213121484907 is an apocalyptic number.
13121484907 is a deficient number, since it is larger than the sum of its proper divisors (1).
13121484907 is an equidigital number, since it uses as much as digits as its factorization.
13121484907 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 48384, while the sum is 40.
The spelling of 13121484907 in words is "thirteen billion, one hundred twenty-one million, four hundred eighty-four thousand, nine hundred seven".
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