Base | Representation |
---|---|
bin | 100100101010010… |
… | …0001001001100111 |
3 | 10011201200100010210 |
4 | 1021110201021213 |
5 | 10004402143211 |
6 | 322021350503 |
7 | 42324544236 |
oct | 11124411147 |
9 | 3151610123 |
10 | 1230115431 |
11 | 581405a26 |
12 | 2a3b68433 |
13 | 167b09b6c |
14 | b952cb1d |
15 | 72ed89a6 |
hex | 49521267 |
1230115431 has 8 divisors (see below), whose sum is σ = 1684482544. Its totient is φ = 797912640.
The previous prime is 1230115421. The next prime is 1230115451. The reversal of 1230115431 is 1345110321.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 1230115431 - 215 = 1230082663 is a prime.
It is a super-2 number, since 2×12301154312 = 3026367947168631522, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 1230115398 and 1230115407.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1230115421) by changing a digit.
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 7 ways as a sum of consecutive naturals, for example, 5540950 + ... + 5541171.
It is an arithmetic number, because the mean of its divisors is an integer number (210560318).
Almost surely, 21230115431 is an apocalyptic number.
1230115431 is a deficient number, since it is larger than the sum of its proper divisors (454367113).
1230115431 is a wasteful number, since it uses less digits than its factorization.
1230115431 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11082161.
The product of its (nonzero) digits is 360, while the sum is 21.
The square root of 1230115431 is about 35073.0014541100. The cubic root of 1230115431 is about 1071.4747855901.
Adding to 1230115431 its reverse (1345110321), we get a palindrome (2575225752).
The spelling of 1230115431 in words is "one billion, two hundred thirty million, one hundred fifteen thousand, four hundred thirty-one".
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