30706723 has 2 divisors, whose sum is σ = 30706724. Its totient is φ = 30706722.

The previous prime is 30706699. The next prime is 30706751. The reversal of 30706723 is 32760703.

It is an a-pointer prime, because the next prime (30706751) can be obtained adding 30706723 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30706723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30706691 and 30706700.

It is not a weakly prime, because it can be changed into another prime (30706783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15353361 + 15353362.

It is an arithmetic number, because the mean of its divisors is an integer number (15353362).

Almost surely, 2^30706723 is an apocalyptic number.

30706723 is a deficient number, since it is larger than the sum of its proper divisors (1).

30706723 is an equidigital number, since it uses as much as digits as its factorization.

30706723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 30706723 is about 5541.3647236037. The cubic root of 30706723 is about 313.1442852626.

The spelling of 30706723 in words is "thirty million, seven hundred six thousand, seven hundred twenty-three".