201001203 has 16 divisors (see below), whose sum is σ = 320686240. Its totient is φ = 123692832.

The previous prime is 201001181. The next prime is 201001219. The reversal of 201001203 is 302100102.

It is a happy number.

It is not a de Polignac number, because 201001203 - 2¹² = 200997107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201001243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285976 + ... + 286677.

It is an arithmetic number, because the mean of its divisors is an integer number (20042890).

Almost surely, 2^201001203 is an apocalyptic number.

201001203 is a deficient number, since it is larger than the sum of its proper divisors (119685037).

201001203 is a wasteful number, since it uses less digits than its factorization.

201001203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572675 (or 572669 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 201001203 is about 14177.4893052331. The cubic root of 201001203 is about 585.7777689016. Note that the first 4 decimals are identical.

Adding to 201001203 its reverse (302100102), we get a palindrome (503101305).

The spelling of 201001203 in words is "two hundred one million, one thousand, two hundred three".