Base | Representation |
---|---|
bin | 11101001100110110… |
… | …111100000010110101 |
3 | 2222221010112111001210 |
4 | 131030312330002311 |
5 | 1003203141204310 |
6 | 22223130112033 |
7 | 2156662436640 |
oct | 351466740265 |
9 | 88833474053 |
10 | 31354241205 |
11 | 1232a719541 |
12 | 60b057b619 |
13 | 2c58b11a61 |
14 | 1736248a57 |
15 | c37980820 |
hex | 74cdbc0b5 |
31354241205 has 64 divisors (see below), whose sum is σ = 59212062720. Its totient is φ = 13870585344.
The previous prime is 31354241179. The next prime is 31354241213. The reversal of 31354241205 is 50214245313.
It is not a de Polignac number, because 31354241205 - 29 = 31354240693 is a prime.
It is a congruent number.
It is an unprimeable number.
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 63 ways as a sum of consecutive naturals, for example, 403522 + ... + 474908.
It is an arithmetic number, because the mean of its divisors is an integer number (925188480).
Almost surely, 231354241205 is an apocalyptic number.
31354241205 is a gapful number since it is divisible by the number (35) formed by its first and last digit.
It is an amenable number.
31354241205 is a deficient number, since it is larger than the sum of its proper divisors (27857821515).
31354241205 is a wasteful number, since it uses less digits than its factorization.
31354241205 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 71538.
The product of its (nonzero) digits is 14400, while the sum is 30.
Adding to 31354241205 its reverse (50214245313), we get a palindrome (81568486518).
The spelling of 31354241205 in words is "thirty-one billion, three hundred fifty-four million, two hundred forty-one thousand, two hundred five".
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