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444130131 = 31019145283
BaseRepresentation
bin11010011110001…
…110001101010011
31010221201011000010
4122132032031103
51402144131011
6112023130003
714002021014
oct3236161523
91127634003
10444130131
112087775a5
121048a3903
1371022cc3
1442db100b
1528ece1a6
hex1a78e353

444130131 has 8 divisors (see below), whose sum is σ = 592758720. Its totient is φ = 295794152.

The previous prime is 444130123. The next prime is 444130139. The reversal of 444130131 is 131031444.

It is an interprime number because it is at equal distance from previous prime (444130123) and next prime (444130139).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 444130131 - 23 = 444130123 is a prime.

It is a super-2 number, since 2×4441301312 = 394503146524154322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 444130098 and 444130107.

It is not an unprimeable number, because it can be changed into a prime (444130139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69585 + ... + 75698.

It is an arithmetic number, because the mean of its divisors is an integer number (74094840).

Almost surely, 2444130131 is an apocalyptic number.

444130131 is a deficient number, since it is larger than the sum of its proper divisors (148628589).

444130131 is a wasteful number, since it uses less digits than its factorization.

444130131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146305.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 444130131 is about 21074.3951514628. The cubic root of 444130131 is about 762.9628864053.

Adding to 444130131 its reverse (131031444), we get a palindrome (575161575).

The spelling of 444130131 in words is "four hundred forty-four million, one hundred thirty thousand, one hundred thirty-one".

Divisors: 1 3 1019 3057 145283 435849 148043377 444130131