30873211 has 2 divisors, whose sum is σ = 30873212. Its totient is φ = 30873210.

The previous prime is 30873191. The next prime is 30873221. The reversal of 30873211 is 11237803.

It is a strong prime.

It is an emirp because it is prime and its reverse (11237803) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30873211 is a prime.

It is not a weakly prime, because it can be changed into another prime (30873221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15436605 + 15436606.

It is an arithmetic number, because the mean of its divisors is an integer number (15436606).

Almost surely, 2^30873211 is an apocalyptic number.

30873211 is a deficient number, since it is larger than the sum of its proper divisors (1).

30873211 is an equidigital number, since it uses as much as digits as its factorization.

30873211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 30873211 is about 5556.3667085606. The cubic root of 30873211 is about 313.7092085188.

The spelling of 30873211 in words is "thirty million, eight hundred seventy-three thousand, two hundred eleven".