Base | Representation |
---|---|
bin | 111101011101000… |
… | …010101001101101 |
3 | 2122212001101221221 |
4 | 331131002221231 |
5 | 4102420220323 |
6 | 250150223341 |
7 | 34356360403 |
oct | 7535025155 |
9 | 2585041857 |
10 | 1031023213 |
11 | 489a93000 |
12 | 249354b51 |
13 | 1357acb0c |
14 | 9ad05473 |
15 | 607ad55d |
hex | 3d742a6d |
1031023213 has 16 divisors (see below), whose sum is σ = 1136719872. Its totient is φ = 935088000.
The previous prime is 1031023199. The next prime is 1031023219. The reversal of 1031023213 is 3123201301.
It is not a de Polignac number, because 1031023213 - 217 = 1030892141 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 (1031023219) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 895188 + ... + 896338.
It is an arithmetic number, because the mean of its divisors is an integer number (71044992).
Almost surely, 21031023213 is an apocalyptic number.
It is an amenable number.
1031023213 is a deficient number, since it is larger than the sum of its proper divisors (105696659).
1031023213 is an equidigital number, since it uses as much as digits as its factorization.
1031023213 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1857 (or 1835 counting only the distinct ones).
The product of its (nonzero) digits is 108, while the sum is 16.
The square root of 1031023213 is about 32109.5501837070. The cubic root of 1031023213 is about 1010.2359390632.
Adding to 1031023213 its reverse (3123201301), we get a palindrome (4154224514).
The spelling of 1031023213 in words is "one billion, thirty-one million, twenty-three thousand, two hundred thirteen".
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