Base | Representation |
---|---|
bin | 1111101010101… |
… | …11011100111001 |
3 | 100011022100100020 |
4 | 13311113130321 |
5 | 232121231301 |
6 | 21013001053 |
7 | 3154065300 |
oct | 765273471 |
9 | 304270306 |
10 | 131430201 |
11 | 68209501 |
12 | 38023189 |
13 | 212c9766 |
14 | 13653437 |
15 | b812436 |
hex | 7d57739 |
131430201 has 24 divisors (see below), whose sum is σ = 214584480. Its totient is φ = 71148672.
The previous prime is 131430197. The next prime is 131430203. The reversal of 131430201 is 102034131.
It is not a de Polignac number, because 131430201 - 22 = 131430197 is a prime.
It is not an unprimeable number, because it can be changed into a prime (131430203) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20736 + ... + 26321.
It is an arithmetic number, because the mean of its divisors is an integer number (8941020).
Almost surely, 2131430201 is an apocalyptic number.
It is an amenable number.
131430201 is a deficient number, since it is larger than the sum of its proper divisors (83154279).
131430201 is a wasteful number, since it uses less digits than its factorization.
131430201 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 47093 (or 47086 counting only the distinct ones).
The product of its (nonzero) digits is 72, while the sum is 15.
The square root of 131430201 is about 11464.3011561979. The cubic root of 131430201 is about 508.4306506385.
Adding to 131430201 its reverse (102034131), we get a palindrome (233464332).
The spelling of 131430201 in words is "one hundred thirty-one million, four hundred thirty thousand, two hundred one".
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