30313123 has 2 divisors, whose sum is σ = 30313124. Its totient is φ = 30313122.

The previous prime is 30313081. The next prime is 30313141. The reversal of 30313123 is 32131303.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30313123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30313097 and 30313106.

It is not a weakly prime, because it can be changed into another prime (30313163) 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, 15156561 + 15156562.

It is an arithmetic number, because the mean of its divisors is an integer number (15156562).

Almost surely, 2^30313123 is an apocalyptic number.

30313123 is a deficient number, since it is larger than the sum of its proper divisors (1).

30313123 is an equidigital number, since it uses as much as digits as its factorization.

30313123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 30313123 is about 5505.7354640411. The cubic root of 30313123 is about 311.8005621922.

Adding to 30313123 its reverse (32131303), we get a palindrome (62444426).

The spelling of 30313123 in words is "thirty million, three hundred thirteen thousand, one hundred twenty-three".