1311103106245 has 16 divisors (see below), whose sum is σ = 1599353853552. Its totient is φ = 1031534184960.

The previous prime is 1311103106239. The next prime is 1311103106267. The reversal of 1311103106245 is 5426013011131.

It can be written as a sum of positive squares in 8 ways, for example, as 920895494689 + 390207611556 = 959633^2 + 624666^2 .

It is not a de Polignac number, because 1311103106245 - 2⁹ = 1311103105733 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1755459 + ... + 2388271.

It is an arithmetic number, because the mean of its divisors is an integer number (99959615847).

Almost surely, 2^{1311103106245} is an apocalyptic number.

It is an amenable number.

1311103106245 is a deficient number, since it is larger than the sum of its proper divisors (288250747307).

1311103106245 is an equidigital number, since it uses as much as digits as its factorization.

1311103106245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639672.

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 1311103106245 its reverse (5426013011131), we get a palindrome (6737116117376).

The spelling of 1311103106245 in words is "one trillion, three hundred eleven billion, one hundred three million, one hundred six thousand, two hundred forty-five".