Base | Representation |
---|---|
bin | 11100111010011110… |
… | …101001111000010011 |
3 | 2222010122022101111121 |
4 | 130322132221320103 |
5 | 1002040221313314 |
6 | 22132353023111 |
7 | 2146226446411 |
oct | 347236517023 |
9 | 88118271447 |
10 | 31045885459 |
11 | 12191658286 |
12 | 6025254a97 |
13 | 2c09c79934 |
14 | 17072dc2b1 |
15 | c1a870d24 |
hex | 73a7a9e13 |
31045885459 has 2 divisors, whose sum is σ = 31045885460. Its totient is φ = 31045885458.
The previous prime is 31045885427. The next prime is 31045885471. The reversal of 31045885459 is 95458854013.
It is a happy number.
It is a strong prime.
It is an emirp because it is prime and its reverse (95458854013) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 31045885459 - 25 = 31045885427 is a prime.
It is not a weakly prime, because it can be changed into another prime (31045885499) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15522942729 + 15522942730.
It is an arithmetic number, because the mean of its divisors is an integer number (15522942730).
Almost surely, 231045885459 is an apocalyptic number.
31045885459 is a deficient number, since it is larger than the sum of its proper divisors (1).
31045885459 is an equidigital number, since it uses as much as digits as its factorization.
31045885459 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 3456000, while the sum is 52.
The spelling of 31045885459 in words is "thirty-one billion, forty-five million, eight hundred eighty-five thousand, four hundred fifty-nine".
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