1201000003 has 32 divisors (see below), whose sum is σ = 1510161408. Its totient is φ = 931660800.

The previous prime is 1200999967. The next prime is 1201000007. The reversal of 1201000003 is 3000001021.

It is not a de Polignac number, because 1201000003 - 2⁹ = 1200999491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a self number, because there is not a number n which added to its sum of digits gives 1201000003.

It is not an unprimeable number, because it can be changed into a prime (1201000007) 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, 344676 + ... + 348142.

It is an arithmetic number, because the mean of its divisors is an integer number (47192544).

Almost surely, 2^1201000003 is an apocalyptic number.

1201000003 is a deficient number, since it is larger than the sum of its proper divisors (309161405).

1201000003 is a wasteful number, since it uses less digits than its factorization.

1201000003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3603.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 1201000003 is about 34655.4469456102. The cubic root of 1201000003 is about 1062.9536710462.

Adding to 1201000003 its reverse (3000001021), we get a palindrome (4201001024).

The spelling of 1201000003 in words is "one billion, two hundred one million, three", and thus it is an aban number.