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30443405441 = 197154535053
BaseRepresentation
bin11100010110100100…
…011000000010000001
32220120122122020021212
4130112210120002001
5444322002433231
621552511455505
72125262451041
oct342644300201
986518566255
1030443405441
1111a02566109
125a97527595
132b421c3297
14168b2ab721
15bd2a1342b
hex716918081

30443405441 has 4 divisors (see below), whose sum is σ = 30597940692. Its totient is φ = 30288870192.

The previous prime is 30443405431. The next prime is 30443405449. The reversal of 30443405441 is 14450434403.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30025611841 + 417793600 = 173279^2 + 20440^2 .

It is a cyclic number.

It is not a de Polignac number, because 30443405441 - 214 = 30443389057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30443405398 and 30443405407.

It is not an unprimeable number, because it can be changed into a prime (30443405449) 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, 77267330 + ... + 77267723.

It is an arithmetic number, because the mean of its divisors is an integer number (7649485173).

Almost surely, 230443405441 is an apocalyptic number.

It is an amenable number.

30443405441 is a deficient number, since it is larger than the sum of its proper divisors (154535251).

30443405441 is a wasteful number, since it uses less digits than its factorization.

30443405441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154535250.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 30443405441 its reverse (14450434403), we get a palindrome (44893839844).

The spelling of 30443405441 in words is "thirty billion, four hundred forty-three million, four hundred five thousand, four hundred forty-one".

Divisors: 1 197 154535053 30443405441