2001000103 has 4 divisors (see below), whose sum is σ = 2003420520. Its totient is φ = 1998579688.

The previous prime is 2001000101. The next prime is 2001000139. The reversal of 2001000103 is 3010001002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2001000103 - 2¹ = 2001000101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001000101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208968 + ... + 1210621.

It is an arithmetic number, because the mean of its divisors is an integer number (500855130).

Almost surely, 2^2001000103 is an apocalyptic number.

2001000103 is a deficient number, since it is larger than the sum of its proper divisors (2420417).

2001000103 is an equidigital number, since it uses as much as digits as its factorization.

2001000103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420416.

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

The square root of 2001000103 is about 44732.5396439773. The cubic root of 2001000103 is about 1260.1310233699.

Adding to 2001000103 its reverse (3010001002), we get a palindrome (5011001105).

The spelling of 2001000103 in words is "two billion, one million, one hundred three", and thus it is an aban number.