1603110613001 has 4 divisors (see below), whose sum is σ = 1605122044932. Its totient is φ = 1601099181072.

The previous prime is 1603110612997. The next prime is 1603110613003. The reversal of 1603110613001 is 1003160113061.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1009824010000 + 593286603001 = 1004900^2 + 770251^2 .

It is a cyclic number.

It is not a de Polignac number, because 1603110613001 - 2² = 1603110612997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1603110613003) 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 3 ways as a sum of consecutive naturals, for example, 1005714770 + ... + 1005716363.

It is an arithmetic number, because the mean of its divisors is an integer number (401280511233).

Almost surely, 2^{1603110613001} is an apocalyptic number.

It is an amenable number.

1603110613001 is a deficient number, since it is larger than the sum of its proper divisors (2011431931).

1603110613001 is an equidigital number, since it uses as much as digits as its factorization.

1603110613001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011431930.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 1603110613001 its reverse (1003160113061), we get a palindrome (2606270726062).

The spelling of 1603110613001 in words is "one trillion, six hundred three billion, one hundred ten million, six hundred thirteen thousand, one".