7311230881 has 2 divisors, whose sum is σ = 7311230882. Its totient is φ = 7311230880.

The previous prime is 7311230819. The next prime is 7311230897. The reversal of 7311230881 is 1880321137.

7311230881 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7065243025 + 245987856 = 84055^2 + 15684^2 .

It is an emirp because it is prime and its reverse (1880321137) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7311230881 - 2⁹ = 7311230369 is a prime.

It is a super-2 number, since 2×7311230881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7311230581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3655615440 + 3655615441.

It is an arithmetic number, because the mean of its divisors is an integer number (3655615441).

Almost surely, 2^7311230881 is an apocalyptic number.

It is an amenable number.

7311230881 is a deficient number, since it is larger than the sum of its proper divisors (1).

7311230881 is an equidigital number, since it uses as much as digits as its factorization.

7311230881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 7311230881 is about 85505.7359537944. The cubic root of 7311230881 is about 1940.8717236783.

The spelling of 7311230881 in words is "seven billion, three hundred eleven million, two hundred thirty thousand, eight hundred eighty-one".