Base | Representation |
---|---|
bin | 1111101010011… |
… | …01101110010111 |
3 | 100011020022200121 |
4 | 13311031232113 |
5 | 232113442414 |
6 | 21012052411 |
7 | 3153541162 |
oct | 765155627 |
9 | 304208617 |
10 | 131390359 |
11 | 68191581 |
12 | 38004107 |
13 | 212b4599 |
14 | 13642ad9 |
15 | b805724 |
hex | 7d4db97 |
131390359 has 2 divisors, whose sum is σ = 131390360. Its totient is φ = 131390358.
The previous prime is 131390341. The next prime is 131390383. The reversal of 131390359 is 953093131.
It is a weak prime.
It is an emirp because it is prime and its reverse (953093131) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 131390359 - 211 = 131388311 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (131390309) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65695179 + 65695180.
It is an arithmetic number, because the mean of its divisors is an integer number (65695180).
Almost surely, 2131390359 is an apocalyptic number.
131390359 is a deficient number, since it is larger than the sum of its proper divisors (1).
131390359 is an equidigital number, since it uses as much as digits as its factorization.
131390359 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 10935, while the sum is 34.
The square root of 131390359 is about 11462.5633695086. The cubic root of 131390359 is about 508.3792699029.
The spelling of 131390359 in words is "one hundred thirty-one million, three hundred ninety thousand, three hundred fifty-nine".
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