30711313 has 2 divisors, whose sum is σ = 30711314. Its totient is φ = 30711312.

The previous prime is 30711293. The next prime is 30711323. The reversal of 30711313 is 31311703.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19998784 + 10712529 = 4472^2 + 3273^2 .

It is an emirp because it is prime and its reverse (31311703) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30711313 - 2⁵ = 30711281 is a prime.

It is not a weakly prime, because it can be changed into another prime (30711323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15355656 + 15355657.

It is an arithmetic number, because the mean of its divisors is an integer number (15355657).

Almost surely, 2^30711313 is an apocalyptic number.

It is an amenable number.

30711313 is a deficient number, since it is larger than the sum of its proper divisors (1).

30711313 is an equidigital number, since it uses as much as digits as its factorization.

30711313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189, while the sum is 19.

The square root of 30711313 is about 5541.7788660321. The cubic root of 30711313 is about 313.1598872819.

The spelling of 30711313 in words is "thirty million, seven hundred eleven thousand, three hundred thirteen".