Base | Representation |
---|---|
bin | 111101011100111… |
… | …111111010110111 |
3 | 2122212000211121111 |
4 | 331130333322313 |
5 | 4102414341043 |
6 | 250150055451 |
7 | 34356312646 |
oct | 7534777267 |
9 | 2585024544 |
10 | 1031012023 |
11 | 489a85658 |
12 | 24934a587 |
13 | 1357a79b2 |
14 | 9ad0135d |
15 | 607aa09d |
hex | 3d73feb7 |
1031012023 has 4 divisors (see below), whose sum is σ = 1031572080. Its totient is φ = 1030451968.
The previous prime is 1031012009. The next prime is 1031012041. The reversal of 1031012023 is 3202101301.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3202101301 = 7 ⋅457443043.
It is a cyclic number.
It is not a de Polignac number, because 1031012023 - 221 = 1028914871 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 1031011994 and 1031012012.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1031012093) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277258 + ... + 280951.
It is an arithmetic number, because the mean of its divisors is an integer number (257893020).
Almost surely, 21031012023 is an apocalyptic number.
1031012023 is a deficient number, since it is larger than the sum of its proper divisors (560057).
1031012023 is an equidigital number, since it uses as much as digits as its factorization.
1031012023 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 560056.
The product of its (nonzero) digits is 36, while the sum is 13.
The square root of 1031012023 is about 32109.3759360097. The cubic root of 1031012023 is about 1010.2322842535.
Adding to 1031012023 its reverse (3202101301), we get a palindrome (4233113324).
The spelling of 1031012023 in words is "one billion, thirty-one million, twelve thousand, twenty-three".
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