30864193 has 2 divisors, whose sum is σ = 30864194. Its totient is φ = 30864192.

The previous prime is 30864173. The next prime is 30864199. The reversal of 30864193 is 39146803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22202944 + 8661249 = 4712^2 + 2943^2 .

It is an emirp because it is prime and its reverse (39146803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30864193 - 2²¹ = 28767041 is a prime.

It is not a weakly prime, because it can be changed into another prime (30864199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15432096 + 15432097.

It is an arithmetic number, because the mean of its divisors is an integer number (15432097).

Almost surely, 2^30864193 is an apocalyptic number.

It is an amenable number.

30864193 is a deficient number, since it is larger than the sum of its proper divisors (1).

30864193 is an equidigital number, since it uses as much as digits as its factorization.

30864193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 30864193 is about 5555.5551477778. Note that the first 3 decimals coincide. The cubic root of 30864193 is about 313.6786609443.

The spelling of 30864193 in words is "thirty million, eight hundred sixty-four thousand, one hundred ninety-three".