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30000424431 = 310000141477
BaseRepresentation
bin11011111100001010…
…100010010111101111
32212102210002110120210
4123330022202113233
5442420102040211
621440525113503
72111303254155
oct337412422757
985383073523
1030000424431
11117a55039aa
1259930b8893
132aa14b3343
1416485193d5
15ba8bae9a6
hex6fc2a25ef

30000424431 has 4 divisors (see below), whose sum is σ = 40000565912. Its totient is φ = 20000282952.

The previous prime is 30000424403. The next prime is 30000424481. The reversal of 30000424431 is 13442400003.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30000424431 - 27 = 30000424303 is a prime.

It is a super-2 number, since 2×300004244312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30000424398 and 30000424407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000424481) 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, 5000070736 + ... + 5000070741.

It is an arithmetic number, because the mean of its divisors is an integer number (10000141478).

Almost surely, 230000424431 is an apocalyptic number.

30000424431 is a deficient number, since it is larger than the sum of its proper divisors (10000141481).

30000424431 is a wasteful number, since it uses less digits than its factorization.

30000424431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000141480.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 30000424431 its reverse (13442400003), we get a palindrome (43442824434).

The spelling of 30000424431 in words is "thirty billion, four hundred twenty-four thousand, four hundred thirty-one".

Divisors: 1 3 10000141477 30000424431