2311315813 has 2 divisors, whose sum is σ = 2311315814. Its totient is φ = 2311315812.

The previous prime is 2311315739. The next prime is 2311315823. The reversal of 2311315813 is 3185131132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2281208644 + 30107169 = 47762^2 + 5487^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311315813 - 2⁹ = 2311315301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2311315823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155657906 + 1155657907.

It is an arithmetic number, because the mean of its divisors is an integer number (1155657907).

Almost surely, 2^2311315813 is an apocalyptic number.

It is an amenable number.

2311315813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311315813 is an equidigital number, since it uses as much as digits as its factorization.

2311315813 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2311315813 is about 48076.1459873813. The cubic root of 2311315813 is about 1322.1673555624.

Adding to 2311315813 its reverse (3185131132), we get a palindrome (5496446945).

The spelling of 2311315813 in words is "two billion, three hundred eleven million, three hundred fifteen thousand, eight hundred thirteen".