30964943 has 2 divisors, whose sum is σ = 30964944. Its totient is φ = 30964942.

The previous prime is 30964933. The next prime is 30964961. The reversal of 30964943 is 34946903.

It is a weak prime.

It is an emirp because it is prime and its reverse (34946903) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30964943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30964897 and 30964906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30964933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15482471 + 15482472.

It is an arithmetic number, because the mean of its divisors is an integer number (15482472).

Almost surely, 2^30964943 is an apocalyptic number.

30964943 is a deficient number, since it is larger than the sum of its proper divisors (1).

30964943 is an equidigital number, since it uses as much as digits as its factorization.

30964943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 30964943 is about 5564.6152607346. The cubic root of 30964943 is about 314.0196040339.

The spelling of 30964943 in words is "thirty million, nine hundred sixty-four thousand, nine hundred forty-three".