Base | Representation |
---|---|
bin | 11100010101111000… |
… | …110010110011010111 |
3 | 2220112212010210120111 |
4 | 130111320302303113 |
5 | 444311041341014 |
6 | 21551422543451 |
7 | 2125063365655 |
oct | 342570626327 |
9 | 86485123514 |
10 | 30431980759 |
11 | 119a7072624 |
12 | 5a93737b87 |
13 | 2b3ca2310b |
14 | 1689975dd5 |
15 | bd1a082c4 |
hex | 715e32cd7 |
30431980759 has 2 divisors, whose sum is σ = 30431980760. Its totient is φ = 30431980758.
The previous prime is 30431980727. The next prime is 30431980849. The reversal of 30431980759 is 95708913403.
It is a weak prime.
It is an emirp because it is prime and its reverse (95708913403) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30431980759 - 25 = 30431980727 is a prime.
It is a super-2 number, since 2×304319807592 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30431986759) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15215990379 + 15215990380.
It is an arithmetic number, because the mean of its divisors is an integer number (15215990380).
Almost surely, 230431980759 is an apocalyptic number.
30431980759 is a deficient number, since it is larger than the sum of its proper divisors (1).
30431980759 is an equidigital number, since it uses as much as digits as its factorization.
30431980759 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 816480, while the sum is 49.
The spelling of 30431980759 in words is "thirty billion, four hundred thirty-one million, nine hundred eighty thousand, seven hundred fifty-nine".
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