1312331311003 has 4 divisors (see below), whose sum is σ = 1318550890888. Its totient is φ = 1306111731120.

The previous prime is 1312331310991. The next prime is 1312331311051. The reversal of 1312331311003 is 3001131332131.

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 1312331311003 - 2¹⁷ = 1312331179931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312331311063) 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, 3109789626 + ... + 3109790047.

It is an arithmetic number, because the mean of its divisors is an integer number (329637722722).

Almost surely, 2^{1312331311003} is an apocalyptic number.

1312331311003 is a deficient number, since it is larger than the sum of its proper divisors (6219579885).

1312331311003 is an equidigital number, since it uses as much as digits as its factorization.

1312331311003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6219579884.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 1312331311003 its reverse (3001131332131), we get a palindrome (4313462643134).

The spelling of 1312331311003 in words is "one trillion, three hundred twelve billion, three hundred thirty-one million, three hundred eleven thousand, three".