Base | Representation |
---|---|
bin | 1111101000111… |
… | …11110111011101 |
3 | 100010212210000210 |
4 | 13310133313131 |
5 | 232041440100 |
6 | 21004043033 |
7 | 3152126436 |
oct | 764376735 |
9 | 303783023 |
10 | 131202525 |
11 | 68073443 |
12 | 37b33479 |
13 | 21249c3c |
14 | 135d448d |
15 | b7b9c50 |
hex | 7d1fddd |
131202525 has 48 divisors (see below), whose sum is σ = 226324800. Its totient is φ = 66984960.
The previous prime is 131202523. The next prime is 131202529. The reversal of 131202525 is 525202131.
It is not a de Polignac number, because 131202525 - 21 = 131202523 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131202523) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 389157 + ... + 389493.
It is an arithmetic number, because the mean of its divisors is an integer number (4715100).
Almost surely, 2131202525 is an apocalyptic number.
131202525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
131202525 is a deficient number, since it is larger than the sum of its proper divisors (95122275).
131202525 is a wasteful number, since it uses less digits than its factorization.
131202525 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 558 (or 553 counting only the distinct ones).
The product of its (nonzero) digits is 600, while the sum is 21.
The square root of 131202525 is about 11454.3670711218. The cubic root of 131202525 is about 508.1368968377.
Adding to 131202525 its reverse (525202131), we get a palindrome (656404656).
The spelling of 131202525 in words is "one hundred thirty-one million, two hundred two thousand, five hundred twenty-five".
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