30103979 has 2 divisors, whose sum is σ = 30103980. Its totient is φ = 30103978.

The previous prime is 30103973. The next prime is 30103993. The reversal of 30103979 is 97930103.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (97930103) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30103979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30103973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15051989 + 15051990.

It is an arithmetic number, because the mean of its divisors is an integer number (15051990).

Almost surely, 2^30103979 is an apocalyptic number.

30103979 is a deficient number, since it is larger than the sum of its proper divisors (1).

30103979 is an equidigital number, since it uses as much as digits as its factorization.

30103979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 30103979 is about 5486.7093052211. The cubic root of 30103979 is about 311.0818221246.

The spelling of 30103979 in words is "thirty million, one hundred three thousand, nine hundred seventy-nine".