Base | Representation |
---|---|
bin | 11101001010111100… |
… | …010110001010100111 |
3 | 2222211220001202202222 |
4 | 131022330112022213 |
5 | 1003121424320422 |
6 | 22220021222555 |
7 | 2156122331612 |
oct | 351274261247 |
9 | 88756052688 |
10 | 31322104487 |
11 | 12313569773 |
12 | 60a1861a5b |
13 | 2c5226c34b |
14 | 1731c81179 |
15 | c34c33842 |
hex | 74af162a7 |
31322104487 has 2 divisors, whose sum is σ = 31322104488. Its totient is φ = 31322104486.
The previous prime is 31322104439. The next prime is 31322104531. The reversal of 31322104487 is 78440122313.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 31322104487 - 226 = 31254995623 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (31322104417) 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 as a sum of consecutive naturals, namely, 15661052243 + 15661052244.
It is an arithmetic number, because the mean of its divisors is an integer number (15661052244).
Almost surely, 231322104487 is an apocalyptic number.
31322104487 is a deficient number, since it is larger than the sum of its proper divisors (1).
31322104487 is an equidigital number, since it uses as much as digits as its factorization.
31322104487 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 32256, while the sum is 35.
The spelling of 31322104487 in words is "thirty-one billion, three hundred twenty-two million, one hundred four thousand, four hundred eighty-seven".
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