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20103047 is a prime number
BaseRepresentation
bin100110010101…
…1111110000111
31101211100012022
41030223332013
520121244142
61554513355
7332605316
oct114537607
941740168
1020103047
1110390798
12689585b
13421b2c3
14295427d
151b716d2
hex132bf87

20103047 has 2 divisors, whose sum is σ = 20103048. Its totient is φ = 20103046.

The previous prime is 20102983. The next prime is 20103067. The reversal of 20103047 is 74030102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20103047 - 26 = 20102983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20103067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051523 + 10051524.

It is an arithmetic number, because the mean of its divisors is an integer number (10051524).

Almost surely, 220103047 is an apocalyptic number.

20103047 is a deficient number, since it is larger than the sum of its proper divisors (1).

20103047 is an equidigital number, since it uses as much as digits as its factorization.

20103047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 20103047 is about 4483.6421578891. The cubic root of 20103047 is about 271.9071509430.

Adding to 20103047 its reverse (74030102), we get a palindrome (94133149).

The spelling of 20103047 in words is "twenty million, one hundred three thousand, forty-seven".