Base | Representation |
---|---|
bin | 11100111100101001… |
… | …010011000100111010 |
3 | 2222020011200212221110 |
4 | 130330221103010322 |
5 | 1002124022330244 |
6 | 22140132021150 |
7 | 2150150411400 |
oct | 347451230472 |
9 | 88204625843 |
10 | 31082230074 |
11 | 12200121555 |
12 | 60354617b6 |
13 | 2c1466371c |
14 | 170c07d470 |
15 | c1db4e9b9 |
hex | 73ca5313a |
31082230074 has 96 divisors (see below), whose sum is σ = 76669286400. Its totient is φ = 8352499680.
The previous prime is 31082230009. The next prime is 31082230097. The reversal of 31082230074 is 47003228013.
It is a super-2 number, since 2×310822300742 (a number of 22 digits) contains 22 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 756439 + ... + 796469.
It is an arithmetic number, because the mean of its divisors is an integer number (798638400).
Almost surely, 231082230074 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 31082230074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38334643200).
31082230074 is an abundant number, since it is smaller than the sum of its proper divisors (45587056326).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31082230074 is a wasteful number, since it uses less digits than its factorization.
31082230074 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 40208 (or 40201 counting only the distinct ones).
The product of its (nonzero) digits is 8064, while the sum is 30.
Adding to 31082230074 its reverse (47003228013), we get a palindrome (78085458087).
The spelling of 31082230074 in words is "thirty-one billion, eighty-two million, two hundred thirty thousand, seventy-four".
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