Base | Representation |
---|---|
bin | 1111100011111… |
… | …00000001100001 |
3 | 100002121200110020 |
4 | 13301330001201 |
5 | 231404001200 |
6 | 20541424053 |
7 | 3143333043 |
oct | 761740141 |
9 | 302550406 |
10 | 130531425 |
11 | 67755212 |
12 | 3786b029 |
13 | 2107363b |
14 | 1349ba93 |
15 | b6d5ea0 |
hex | 7c7c061 |
130531425 has 48 divisors (see below), whose sum is σ = 229152000. Its totient is φ = 65378880.
The previous prime is 130531409. The next prime is 130531433. The reversal of 130531425 is 524135031.
It is not a de Polignac number, because 130531425 - 24 = 130531409 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 130531395 and 130531404.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 197746 + ... + 198404.
It is an arithmetic number, because the mean of its divisors is an integer number (4774000).
Almost surely, 2130531425 is an apocalyptic number.
130531425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
130531425 is a deficient number, since it is larger than the sum of its proper divisors (98620575).
130531425 is a wasteful number, since it uses less digits than its factorization.
130531425 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 830 (or 825 counting only the distinct ones).
The product of its (nonzero) digits is 1800, while the sum is 24.
The square root of 130531425 is about 11425.0350108873. The cubic root of 130531425 is about 507.2690432357.
Adding to 130531425 its reverse (524135031), we get a palindrome (654666456).
The spelling of 130531425 in words is "one hundred thirty million, five hundred thirty-one thousand, four hundred twenty-five".
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