Base | Representation |
---|---|
bin | 11100001101010101… |
… | …110010101010100111 |
3 | 2220011212022122220111 |
4 | 130031111302222213 |
5 | 444012334244211 |
6 | 21525301313451 |
7 | 2121402513424 |
oct | 341525625247 |
9 | 86155278814 |
10 | 30288587431 |
11 | 11933133043 |
12 | 5a53705887 |
13 | 2b190c83ab |
14 | 16748cad4b |
15 | bc4131421 |
hex | 70d572aa7 |
30288587431 has 2 divisors, whose sum is σ = 30288587432. Its totient is φ = 30288587430.
The previous prime is 30288587411. The next prime is 30288587447. The reversal of 30288587431 is 13478588203.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 30288587431 - 29 = 30288586919 is a prime.
It is a super-2 number, since 2×302885874312 (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 (30288587411) 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, 15144293715 + 15144293716.
It is an arithmetic number, because the mean of its divisors is an integer number (15144293716).
Almost surely, 230288587431 is an apocalyptic number.
30288587431 is a deficient number, since it is larger than the sum of its proper divisors (1).
30288587431 is an equidigital number, since it uses as much as digits as its factorization.
30288587431 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1290240, while the sum is 49.
The spelling of 30288587431 in words is "thirty billion, two hundred eighty-eight million, five hundred eighty-seven thousand, four hundred thirty-one".
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