30423709 has 2 divisors, whose sum is σ = 30423710. Its totient is φ = 30423708.

The previous prime is 30423691. The next prime is 30423719. The reversal of 30423709 is 90732403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28676025 + 1747684 = 5355^2 + 1322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30423709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30423719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15211854 + 15211855.

It is an arithmetic number, because the mean of its divisors is an integer number (15211855).

Almost surely, 2^30423709 is an apocalyptic number.

It is an amenable number.

30423709 is a deficient number, since it is larger than the sum of its proper divisors (1).

30423709 is an equidigital number, since it uses as much as digits as its factorization.

30423709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 30423709 is about 5515.7691213465. The cubic root of 30423709 is about 312.1792643109.

The spelling of 30423709 in words is "thirty million, four hundred twenty-three thousand, seven hundred nine".