11312311313 has 4 divisors (see below), whose sum is σ = 11353150260. Its totient is φ = 11271472368.

The previous prime is 11312311279. The next prime is 11312311327. The reversal of 11312311313 is 31311321311.

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 5051229184 + 6261082129 = 71072^2 + 79127^2 .

It is a cyclic number.

It is not a de Polignac number, because 11312311313 - 2⁸ = 11312311057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11312310313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20419058 + ... + 20419611.

It is an arithmetic number, because the mean of its divisors is an integer number (2838287565).

Almost surely, 2^11312311313 is an apocalyptic number.

It is an amenable number.

11312311313 is a deficient number, since it is larger than the sum of its proper divisors (40838947).

11312311313 is an equidigital number, since it uses as much as digits as its factorization.

11312311313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40838946.

The product of its digits is 162, while the sum is 20.

Adding to 11312311313 its reverse (31311321311), we get a palindrome (42623632624).

The spelling of 11312311313 in words is "eleven billion, three hundred twelve million, three hundred eleven thousand, three hundred thirteen".