2311331317 has 2 divisors, whose sum is σ = 2311331318. Its totient is φ = 2311331316.

The previous prime is 2311331311. The next prime is 2311331333. The reversal of 2311331317 is 7131331132.

2311331317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2311109476 + 221841 = 48074^2 + 471^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2311331317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2311331291 and 2311331300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2311331311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155665658 + 1155665659.

It is an arithmetic number, because the mean of its divisors is an integer number (1155665659).

Almost surely, 2^2311331317 is an apocalyptic number.

It is an amenable number.

2311331317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311331317 is an equidigital number, since it uses as much as digits as its factorization.

2311331317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 25.

The square root of 2311331317 is about 48076.3072313172. The cubic root of 2311331317 is about 1322.1703118635.

Adding to 2311331317 its reverse (7131331132), we get a palindrome (9442662449).

The spelling of 2311331317 in words is "two billion, three hundred eleven million, three hundred thirty-one thousand, three hundred seventeen".