30730873 has 2 divisors, whose sum is σ = 30730874. Its totient is φ = 30730872.

The previous prime is 30730867. The next prime is 30730877. The reversal of 30730873 is 37803703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20820969 + 9909904 = 4563^2 + 3148^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30730873 is a prime.

It is not a weakly prime, because it can be changed into another prime (30730877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15365436 + 15365437.

It is an arithmetic number, because the mean of its divisors is an integer number (15365437).

Almost surely, 2^30730873 is an apocalyptic number.

It is an amenable number.

30730873 is a deficient number, since it is larger than the sum of its proper divisors (1).

30730873 is an equidigital number, since it uses as much as digits as its factorization.

30730873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 30730873 is about 5543.5433614251. The cubic root of 30730873 is about 313.2263568967.

The spelling of 30730873 in words is "thirty million, seven hundred thirty thousand, eight hundred seventy-three".