Base | Representation |
---|---|
bin | 111101011101110… |
… | …111111000001001 |
3 | 2122212110111000110 |
4 | 331131313320021 |
5 | 4102444204400 |
6 | 250155024533 |
7 | 34361256120 |
oct | 7535677011 |
9 | 2585414013 |
10 | 1031241225 |
11 | 48a121883 |
12 | 24943b149 |
13 | 135858111 |
14 | 9ad60ab7 |
15 | 60802e50 |
hex | 3d777e09 |
1031241225 has 96 divisors (see below), whose sum is σ = 2083866624. Its totient is φ = 439718400.
The previous prime is 1031241217. The next prime is 1031241229. The reversal of 1031241225 is 5221421301.
It is not a de Polignac number, because 1031241225 - 23 = 1031241217 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (21).
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (1031241229) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 494034 + ... + 496116.
It is an arithmetic number, because the mean of its divisors is an integer number (21706944).
Almost surely, 21031241225 is an apocalyptic number.
1031241225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
1031241225 is an abundant number, since it is smaller than the sum of its proper divisors (1052625399).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1031241225 is a wasteful number, since it uses less digits than its factorization.
1031241225 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2167 (or 2162 counting only the distinct ones).
The product of its (nonzero) digits is 480, while the sum is 21.
The square root of 1031241225 is about 32112.9448198075. The cubic root of 1031241225 is about 1010.3071395409.
Adding to 1031241225 its reverse (5221421301), we get a palindrome (6252662526).
The spelling of 1031241225 in words is "one billion, thirty-one million, two hundred forty-one thousand, two hundred twenty-five".
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