Base | Representation |
---|---|
bin | 1111101001001… |
… | …00101100011111 |
3 | 100010220210011022 |
4 | 13310210230133 |
5 | 232043103203 |
6 | 21004314355 |
7 | 3152241212 |
oct | 764445437 |
9 | 303823138 |
10 | 131222303 |
11 | 68087293 |
12 | 37b429bb |
13 | 21255c44 |
14 | 135db779 |
15 | b7c0a38 |
hex | 7d24b1f |
131222303 has 16 divisors (see below), whose sum is σ = 151308000. Its totient is φ = 112960512.
The previous prime is 131222297. The next prime is 131222317. The reversal of 131222303 is 303222131.
It is not a de Polignac number, because 131222303 - 212 = 131218207 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (17).
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131222323) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2363 + ... + 16371.
It is an arithmetic number, because the mean of its divisors is an integer number (9456750).
Almost surely, 2131222303 is an apocalyptic number.
131222303 is a deficient number, since it is larger than the sum of its proper divisors (20085697).
131222303 is a wasteful number, since it uses less digits than its factorization.
131222303 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 14074.
The product of its (nonzero) digits is 216, while the sum is 17.
The square root of 131222303 is about 11455.2303774302. The cubic root of 131222303 is about 508.1624284261.
Adding to 131222303 its reverse (303222131), we get a palindrome (434444434).
The spelling of 131222303 in words is "one hundred thirty-one million, two hundred twenty-two thousand, three hundred three".
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