Base | Representation |
---|---|
bin | 1111101001001… |
… | …10100110010111 |
3 | 100010221011212012 |
4 | 13310212212113 |
5 | 232043330403 |
6 | 21004414435 |
7 | 3152303024 |
oct | 764464627 |
9 | 303834765 |
10 | 131230103 |
11 | 68092134 |
12 | 37b4741b |
13 | 21259664 |
14 | 1360054b |
15 | b7c2ed8 |
hex | 7d26997 |
131230103 has 4 divisors (see below), whose sum is σ = 132016080. Its totient is φ = 130444128.
The previous prime is 131230087. The next prime is 131230117. The reversal of 131230103 is 301032131.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 131230103 - 24 = 131230087 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131230003) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392738 + ... + 393071.
It is an arithmetic number, because the mean of its divisors is an integer number (33004020).
Almost surely, 2131230103 is an apocalyptic number.
131230103 is a deficient number, since it is larger than the sum of its proper divisors (785977).
131230103 is an equidigital number, since it uses as much as digits as its factorization.
131230103 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 785976.
The product of its (nonzero) digits is 54, while the sum is 14.
The square root of 131230103 is about 11455.5708282041. The cubic root of 131230103 is about 508.1724968070.
Adding to 131230103 its reverse (301032131), we get a palindrome (432262234).
The spelling of 131230103 in words is "one hundred thirty-one million, two hundred thirty thousand, one hundred three".
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