Base | Representation |
---|---|
bin | 11100111110111110… |
… | …110001100010101001 |
3 | 2222022220102122121120 |
4 | 130332332301202221 |
5 | 1002214040224223 |
6 | 22144051525453 |
7 | 2151134441223 |
oct | 347676614251 |
9 | 88286378546 |
10 | 31121414313 |
11 | 12220255220 |
12 | 60465b9889 |
13 | 2c1c802b72 |
14 | 171335d413 |
15 | c222debe3 |
hex | 73efb18a9 |
31121414313 has 16 divisors (see below), whose sum is σ = 45593184000. Its totient is φ = 18725766480.
The previous prime is 31121414281. The next prime is 31121414329. The reversal of 31121414313 is 31341412113.
It is a happy number.
It is not a de Polignac number, because 31121414313 - 25 = 31121414281 is a prime.
It is not an unprimeable number, because it can be changed into a prime (31121414353) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3387763 + ... + 3396936.
It is an arithmetic number, because the mean of its divisors is an integer number (2849574000).
Almost surely, 231121414313 is an apocalyptic number.
31121414313 is a gapful number since it is divisible by the number (33) formed by its first and last digit.
It is an amenable number.
31121414313 is a deficient number, since it is larger than the sum of its proper divisors (14471769687).
31121414313 is a wasteful number, since it uses less digits than its factorization.
31121414313 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6784852.
The product of its digits is 864, while the sum is 24.
Adding to 31121414313 its reverse (31341412113), we get a palindrome (62462826426).
The spelling of 31121414313 in words is "thirty-one billion, one hundred twenty-one million, four hundred fourteen thousand, three hundred thirteen".
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