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30444043141 = 137222219293
BaseRepresentation
bin11100010110100110…
…110011101110000101
32220120200211122001101
4130112212303232011
5444322133340031
621552533300101
72125301045161
oct342646635605
986520748041
1030444043141
1111a02961236
125a97794631
132b42387615
14168b3d5ca1
15bd2adc361
hex7169b3b85

30444043141 has 4 divisors (see below), whose sum is σ = 30666262572. Its totient is φ = 30221823712.

The previous prime is 30444043109. The next prime is 30444043169. The reversal of 30444043141 is 14134044403.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14134044403 = 47300724349.

It can be written as a sum of positive squares in 2 ways, for example, as 22814894116 + 7629149025 = 151046^2 + 87345^2 .

It is a cyclic number.

It is not a de Polignac number, because 30444043141 - 25 = 30444043109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30444083141) 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 in 3 ways as a sum of consecutive naturals, for example, 111109510 + ... + 111109783.

It is an arithmetic number, because the mean of its divisors is an integer number (7666565643).

Almost surely, 230444043141 is an apocalyptic number.

It is an amenable number.

30444043141 is a deficient number, since it is larger than the sum of its proper divisors (222219431).

30444043141 is a wasteful number, since it uses less digits than its factorization.

30444043141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222219430.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 30444043141 its reverse (14134044403), we get a palindrome (44578087544).

The spelling of 30444043141 in words is "thirty billion, four hundred forty-four million, forty-three thousand, one hundred forty-one".

Divisors: 1 137 222219293 30444043141