Base | Representation |
---|---|
bin | 101010101000000… |
… | …1010110101001111 |
3 | 10200200100212112022 |
4 | 1111100022311033 |
5 | 10412124131111 |
6 | 353532200355 |
7 | 50305236524 |
oct | 12520126517 |
9 | 3620325468 |
10 | 1430302031 |
11 | 6744060a4 |
12 | 33b0090bb |
13 | 19a42b082 |
14 | d7d5d14b |
15 | 8587d2db |
hex | 5540ad4f |
1430302031 has 4 divisors (see below), whose sum is σ = 1448407200. Its totient is φ = 1412196864.
The previous prime is 1430302009. The next prime is 1430302037. The reversal of 1430302031 is 1302030341.
It is a happy number.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 1430302031 - 26 = 1430301967 is a prime.
It is a super-2 number, since 2×14303020312 = 4091527799765449922, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1430302037) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9052466 + ... + 9052623.
It is an arithmetic number, because the mean of its divisors is an integer number (362101800).
Almost surely, 21430302031 is an apocalyptic number.
1430302031 is a deficient number, since it is larger than the sum of its proper divisors (18105169).
1430302031 is an equidigital number, since it uses as much as digits as its factorization.
1430302031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 18105168.
The product of its (nonzero) digits is 216, while the sum is 17.
The square root of 1430302031 is about 37819.3340898541. The cubic root of 1430302031 is about 1126.7024839615.
Adding to 1430302031 its reverse (1302030341), we get a palindrome (2732332372).
The spelling of 1430302031 in words is "one billion, four hundred thirty million, three hundred two thousand, thirty-one".
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