Base | Representation |
---|---|
bin | 111101011001101… |
… | …011110111000111 |
3 | 2122210101201010102 |
4 | 331121223313013 |
5 | 4102204042211 |
6 | 250115314315 |
7 | 34346034422 |
oct | 7531536707 |
9 | 2583351112 |
10 | 1030143431 |
11 | 489542009 |
12 | 248bab99b |
13 | 135562535 |
14 | 9ab569b9 |
15 | 60687a3b |
hex | 3d66bdc7 |
1030143431 has 2 divisors, whose sum is σ = 1030143432. Its totient is φ = 1030143430.
The previous prime is 1030143419. The next prime is 1030143437. The reversal of 1030143431 is 1343410301.
It is a strong prime.
It is an emirp because it is prime and its reverse (1343410301) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-1030143431 is a prime.
It is a super-2 number, since 2×10301434312 = 2122390976864903522, which contains 22 as substring.
It is a Sophie Germain prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1030143437) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515071715 + 515071716.
It is an arithmetic number, because the mean of its divisors is an integer number (515071716).
Almost surely, 21030143431 is an apocalyptic number.
1030143431 is a deficient number, since it is larger than the sum of its proper divisors (1).
1030143431 is an equidigital number, since it uses as much as digits as its factorization.
1030143431 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 432, while the sum is 20.
The square root of 1030143431 is about 32095.8475663130. The cubic root of 1030143431 is about 1009.9485092856.
Adding to 1030143431 its reverse (1343410301), we get a palindrome (2373553732).
The spelling of 1030143431 in words is "one billion, thirty million, one hundred forty-three thousand, four hundred thirty-one".
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