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103391 is a prime number
BaseRepresentation
bin11001001111011111
312020211022
4121033133
511302031
62114355
7610301
oct311737
9166738
10103391
1170752
124b9bb
13380a2
1429971
152097b
hex193df

103391 has 2 divisors, whose sum is σ = 103392. Its totient is φ = 103390.

The previous prime is 103387. The next prime is 103393. The reversal of 103391 is 193301.

Adding to 103391 its reverse (193301), we get a palindrome (296692).

It can be divided in two parts, 103 and 391, that added together give a palindrome (494).

It is a strong prime.

It is an emirp because it is prime and its reverse (193301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103391 - 22 = 103387 is a prime.

It is a Sophie Germain prime.

Together with 103393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 103391.

It is not a weakly prime, because it can be changed into another prime (103393) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51695 + 51696.

It is an arithmetic number, because the mean of its divisors is an integer number (51696).

2103391 is an apocalyptic number.

103391 is a deficient number, since it is larger than the sum of its proper divisors (1).

103391 is an equidigital number, since it uses as much as digits as its factorization.

103391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 103391 is about 321.5447091774. The cubic root of 103391 is about 46.9347215086.

The spelling of 103391 in words is "one hundred three thousand, three hundred ninety-one".