2311312313 has 4 divisors (see below), whose sum is σ = 2316802788. Its totient is φ = 2305821840.

The previous prime is 2311312301. The next prime is 2311312321. The reversal of 2311312313 is 3132131132.

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 17572864 + 2293739449 = 4192^2 + 47893^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2311312313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2311312363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2744606 + ... + 2745447.

It is an arithmetic number, because the mean of its divisors is an integer number (579200697).

Almost surely, 2^2311312313 is an apocalyptic number.

It is an amenable number.

2311312313 is a deficient number, since it is larger than the sum of its proper divisors (5490475).

2311312313 is an equidigital number, since it uses as much as digits as its factorization.

2311312313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5490474.

The product of its digits is 324, while the sum is 20.

The square root of 2311312313 is about 48076.1095867792. The cubic root of 2311312313 is about 1322.1666881809.

Adding to 2311312313 its reverse (3132131132), we get a palindrome (5443443445).

The spelling of 2311312313 in words is "two billion, three hundred eleven million, three hundred twelve thousand, three hundred thirteen".