111311245313 has 4 divisors (see below), whose sum is σ = 111312015828. Its totient is φ = 111310474800.

The previous prime is 111311245271. The next prime is 111311245333. The reversal of 111311245313 is 313542113111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 313542113111 = 157 ⋅1997083523.

It can be written as a sum of positive squares in 2 ways, for example, as 64583073424 + 46728171889 = 254132^2 + 216167^2 .

It is a cyclic number.

It is not a de Polignac number, because 111311245313 - 2¹⁸ = 111310983169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111311245333) 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, 96338 + ... + 481563.

It is an arithmetic number, because the mean of its divisors is an integer number (27828003957).

Almost surely, 2^111311245313 is an apocalyptic number.

It is an amenable number.

111311245313 is a deficient number, since it is larger than the sum of its proper divisors (770515).

111311245313 is an equidigital number, since it uses as much as digits as its factorization.

111311245313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770514.

The product of its digits is 1080, while the sum is 26.

Adding to 111311245313 its reverse (313542113111), we get a palindrome (424853358424).

The spelling of 111311245313 in words is "one hundred eleven billion, three hundred eleven million, two hundred forty-five thousand, three hundred thirteen".