Base | Representation |
---|---|
bin | 1111100000110… |
… | …11100101101111 |
3 | 100001212121121211 |
4 | 13300123211233 |
5 | 231303331211 |
6 | 20525135251 |
7 | 3140066335 |
oct | 760334557 |
9 | 301777554 |
10 | 130136431 |
11 | 67505477 |
12 | 376ba527 |
13 | 20c65909 |
14 | 133d7b55 |
15 | b658e21 |
hex | 7c1b96f |
130136431 has 2 divisors, whose sum is σ = 130136432. Its totient is φ = 130136430.
The previous prime is 130136399. The next prime is 130136441. The reversal of 130136431 is 134631031.
It is a happy number.
It is a strong prime.
It is an emirp because it is prime and its reverse (134631031) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 130136431 - 25 = 130136399 is a prime.
It is a super-2 number, since 2×1301364312 = 33870981346835522, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (130136441) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65068215 + 65068216.
It is an arithmetic number, because the mean of its divisors is an integer number (65068216).
Almost surely, 2130136431 is an apocalyptic number.
130136431 is a deficient number, since it is larger than the sum of its proper divisors (1).
130136431 is an equidigital number, since it uses as much as digits as its factorization.
130136431 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 648, while the sum is 22.
The square root of 130136431 is about 11407.7355772300. The cubic root of 130136431 is about 506.7568532229.
Adding to 130136431 its reverse (134631031), we get a palindrome (264767462).
The spelling of 130136431 in words is "one hundred thirty million, one hundred thirty-six thousand, four hundred thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.066 sec. • engine limits •