1001001000103 has 4 divisors (see below), whose sum is σ = 1078001077048. Its totient is φ = 924000923160.

The previous prime is 1001001000061. The next prime is 1001001000113. The reversal of 1001001000103 is 3010001001001.

It is a happy number.

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 1001001000103 - 2¹⁷ = 1001000869031 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 (1001001000113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38500038453 + ... + 38500038478.

It is an arithmetic number, because the mean of its divisors is an integer number (269500269262).

Almost surely, 2^{1001001000103} is an apocalyptic number.

1001001000103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1001001000103 is a deficient number, since it is larger than the sum of its proper divisors (77000076945).

1001001000103 is an equidigital number, since it uses as much as digits as its factorization.

1001001000103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77000076944.

The product of its (nonzero) digits is 3, while the sum is 7.

Adding to 1001001000103 its reverse (3010001001001), we get a palindrome (4011002001104).

The spelling of 1001001000103 in words is "one trillion, one billion, one million, one hundred three", and thus it is an aban number.