30868973 has 2 divisors, whose sum is σ = 30868974. Its totient is φ = 30868972.

The previous prime is 30868961. The next prime is 30868993. The reversal of 30868973 is 37986803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21548164 + 9320809 = 4642^2 + 3053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30868973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30868993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15434486 + 15434487.

It is an arithmetic number, because the mean of its divisors is an integer number (15434487).

Almost surely, 2^30868973 is an apocalyptic number.

It is an amenable number.

30868973 is a deficient number, since it is larger than the sum of its proper divisors (1).

30868973 is an equidigital number, since it uses as much as digits as its factorization.

30868973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 30868973 is about 5555.9853311541. The cubic root of 30868973 is about 313.6948534580.

The spelling of 30868973 in words is "thirty million, eight hundred sixty-eight thousand, nine hundred seventy-three".