1311020003101 has 4 divisors (see below), whose sum is σ = 1317812853052. Its totient is φ = 1304227153152.

The previous prime is 1311020003089. The next prime is 1311020003129. The reversal of 1311020003101 is 1013000201131.

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 509583250201 + 801436752900 = 713851^2 + 895230^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311020003101 - 2²⁵ = 1310986448669 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 (1311020003131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3396424686 + ... + 3396425071.

It is an arithmetic number, because the mean of its divisors is an integer number (329453213263).

Almost surely, 2^{1311020003101} is an apocalyptic number.

It is an amenable number.

1311020003101 is a deficient number, since it is larger than the sum of its proper divisors (6792849951).

1311020003101 is an equidigital number, since it uses as much as digits as its factorization.

1311020003101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6792849950.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 1311020003101 its reverse (1013000201131), we get a palindrome (2324020204232).

The spelling of 1311020003101 in words is "one trillion, three hundred eleven billion, twenty million, three thousand, one hundred one".