30739123 has 2 divisors, whose sum is σ = 30739124. Its totient is φ = 30739122.

The previous prime is 30739117. The next prime is 30739127. The reversal of 30739123 is 32193703.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30739123 - 2¹⁷ = 30608051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30739091 and 30739100.

It is not a weakly prime, because it can be changed into another prime (30739127) 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, 15369561 + 15369562.

It is an arithmetic number, because the mean of its divisors is an integer number (15369562).

Almost surely, 2^30739123 is an apocalyptic number.

30739123 is a deficient number, since it is larger than the sum of its proper divisors (1).

30739123 is an equidigital number, since it uses as much as digits as its factorization.

30739123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 30739123 is about 5544.2874203995. The cubic root of 30739123 is about 313.2543839369.

The spelling of 30739123 in words is "thirty million, seven hundred thirty-nine thousand, one hundred twenty-three".