30974863 has 2 divisors, whose sum is σ = 30974864. Its totient is φ = 30974862.

The previous prime is 30974861. The next prime is 30974869. The reversal of 30974863 is 36847903.

It is a weak prime.

It is an emirp because it is prime and its reverse (36847903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30974863 - 2¹ = 30974861 is a prime.

Together with 30974861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30974861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15487431 + 15487432.

It is an arithmetic number, because the mean of its divisors is an integer number (15487432).

Almost surely, 2^30974863 is an apocalyptic number.

30974863 is a deficient number, since it is larger than the sum of its proper divisors (1).

30974863 is an equidigital number, since it uses as much as digits as its factorization.

30974863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 30974863 is about 5565.5065357971. The cubic root of 30974863 is about 314.0531337999.

The spelling of 30974863 in words is "thirty million, nine hundred seventy-four thousand, eight hundred sixty-three".