201243003 has 32 divisors (see below), whose sum is σ = 306163200. Its totient is φ = 117250848.

The previous prime is 201242981. The next prime is 201243011. The reversal of 201243003 is 300342102.

It is not a de Polignac number, because 201243003 - 2⁸ = 201242747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201243043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124426 + ... + 126032.

It is an arithmetic number, because the mean of its divisors is an integer number (9567600).

Almost surely, 2^201243003 is an apocalyptic number.

201243003 is a deficient number, since it is larger than the sum of its proper divisors (104920197).

201243003 is a wasteful number, since it uses less digits than its factorization.

201243003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668 (or 1642 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 201243003 is about 14186.0143451217. The cubic root of 201243003 is about 586.0125673395.

Adding to 201243003 its reverse (300342102), we get a palindrome (501585105).

Subtracting 201243003 from its reverse (300342102), we obtain a palindrome (99099099).

It can be divided in two parts, 20124300 and 3, that multiplied together give a square (60372900 = 7770²).

The spelling of 201243003 in words is "two hundred one million, two hundred forty-three thousand, three".