1311234022103 has 4 divisors (see below), whose sum is σ = 1318813409688. Its totient is φ = 1303654634520.

The previous prime is 1311234022093. The next prime is 1311234022123. The reversal of 1311234022103 is 3012204321131.

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 1311234022103 - 2²⁰ = 1311232973527 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 (1311234022123) 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, 3789693533 + ... + 3789693878.

It is an arithmetic number, because the mean of its divisors is an integer number (329703352422).

Almost surely, 2^{1311234022103} is an apocalyptic number.

1311234022103 is a deficient number, since it is larger than the sum of its proper divisors (7579387585).

1311234022103 is an equidigital number, since it uses as much as digits as its factorization.

1311234022103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7579387584.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1311234022103 its reverse (3012204321131), we get a palindrome (4323438343234).

The spelling of 1311234022103 in words is "one trillion, three hundred eleven billion, two hundred thirty-four million, twenty-two thousand, one hundred three".