12017903 has 2 divisors, whose sum is σ = 12017904. Its totient is φ = 12017902.

The previous prime is 12017897. The next prime is 12017921. The reversal of 12017903 is 30971021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12017903 - 2⁶ = 12017839 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 (12017953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6008951 + 6008952.

It is an arithmetic number, because the mean of its divisors is an integer number (6008952).

Almost surely, 2^12017903 is an apocalyptic number.

12017903 is a deficient number, since it is larger than the sum of its proper divisors (1).

12017903 is an equidigital number, since it uses as much as digits as its factorization.

12017903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 12017903 is about 3466.6847275171. The cubic root of 12017903 is about 229.0566464875.

Adding to 12017903 its reverse (30971021), we get a palindrome (42988924).

The spelling of 12017903 in words is "twelve million, seventeen thousand, nine hundred three".