1311003001003 has 4 divisors (see below), whose sum is σ = 1311005728288. Its totient is φ = 1311000273720.

The previous prime is 1311003001001. The next prime is 1311003001019. The reversal of 1311003001003 is 3001003001131.

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 1311003001003 - 2¹ = 1311003001001 is a prime.

It is a super-3 number, since 3×1311003001003³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311003001001) 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, 429108 + ... + 1675153.

It is an arithmetic number, because the mean of its divisors is an integer number (327751432072).

Almost surely, 2^{1311003001003} is an apocalyptic number.

1311003001003 is a deficient number, since it is larger than the sum of its proper divisors (2727285).

1311003001003 is an equidigital number, since it uses as much as digits as its factorization.

1311003001003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727284.

The product of its (nonzero) digits is 27, while the sum is 13.

Adding to 1311003001003 its reverse (3001003001131), we get a palindrome (4312006002134).

The spelling of 1311003001003 in words is "one trillion, three hundred eleven billion, three million, one thousand, three".