Base | Representation |
---|---|
bin | 11001000111110011… |
… | …01100110010000111 |
3 | 1021210221121021111021 |
4 | 30203321230302013 |
5 | 210110212330322 |
6 | 10110154052011 |
7 | 655140364342 |
oct | 144371546207 |
9 | 37727537437 |
10 | 13487230087 |
11 | 57a120a651 |
12 | 2744a1a007 |
13 | 136c305526 |
14 | 91d359459 |
15 | 53e0e64c7 |
hex | 323e6cc87 |
13487230087 has 2 divisors, whose sum is σ = 13487230088. Its totient is φ = 13487230086.
The previous prime is 13487230069. The next prime is 13487230091. The reversal of 13487230087 is 78003278431.
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-13487230087 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (13487230037) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6743615043 + 6743615044.
It is an arithmetic number, because the mean of its divisors is an integer number (6743615044).
Almost surely, 213487230087 is an apocalyptic number.
13487230087 is a deficient number, since it is larger than the sum of its proper divisors (1).
13487230087 is an equidigital number, since it uses as much as digits as its factorization.
13487230087 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 225792, while the sum is 43.
The spelling of 13487230087 in words is "thirteen billion, four hundred eighty-seven million, two hundred thirty thousand, eighty-seven".
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