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20310041 = 149136309
BaseRepresentation
bin100110101111…
…0100000011001
31102012212010202
41031132200121
520144410131
62003151545
7334426643
oct115364031
942185122
1020310041
1110512264
1269755b5
13429159b
1429a9893
151bb2bcb
hex135e819

20310041 has 4 divisors (see below), whose sum is σ = 20446500. Its totient is φ = 20173584.

The previous prime is 20310029. The next prime is 20310049. The reversal of 20310041 is 14001302.

It is a happy number.

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 1948816 + 18361225 = 1396^2 + 4285^2 .

It is a cyclic number.

It is not a de Polignac number, because 20310041 - 214 = 20293657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20310049) 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, 68006 + ... + 68303.

It is an arithmetic number, because the mean of its divisors is an integer number (5111625).

Almost surely, 220310041 is an apocalyptic number.

It is an amenable number.

20310041 is a deficient number, since it is larger than the sum of its proper divisors (136459).

20310041 is a wasteful number, since it uses less digits than its factorization.

20310041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136458.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20310041 is about 4506.6662845167. Note that the first 3 decimals coincide. The cubic root of 20310041 is about 272.8372101257.

Adding to 20310041 its reverse (14001302), we get a palindrome (34311343).

The spelling of 20310041 in words is "twenty million, three hundred ten thousand, forty-one".

Divisors: 1 149 136309 20310041