30864173 has 2 divisors, whose sum is σ = 30864174. Its totient is φ = 30864172.

The previous prime is 30864157. The next prime is 30864193. The reversal of 30864173 is 37146803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27227524 + 3636649 = 5218^2 + 1907^2 .

It is an emirp because it is prime and its reverse (37146803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30864173 - 2⁴ = 30864157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30864133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15432086 + 15432087.

It is an arithmetic number, because the mean of its divisors is an integer number (15432087).

Almost surely, 2^30864173 is an apocalyptic number.

It is an amenable number.

30864173 is a deficient number, since it is larger than the sum of its proper divisors (1).

30864173 is an equidigital number, since it uses as much as digits as its factorization.

30864173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 30864173 is about 5555.5533477773. The cubic root of 30864173 is about 313.6785931897.

The spelling of 30864173 in words is "thirty million, eight hundred sixty-four thousand, one hundred seventy-three".