30313979 has 2 divisors, whose sum is σ = 30313980. Its totient is φ = 30313978.

The previous prime is 30313967. The next prime is 30313981. The reversal of 30313979 is 97931303.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (97931303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30313979 - 2⁴ = 30313963 is a prime.

Together with 30313981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30310979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15156989 + 15156990.

It is an arithmetic number, because the mean of its divisors is an integer number (15156990).

Almost surely, 2^30313979 is an apocalyptic number.

30313979 is a deficient number, since it is larger than the sum of its proper divisors (1).

30313979 is an equidigital number, since it uses as much as digits as its factorization.

30313979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15309, while the sum is 35.

The square root of 30313979 is about 5505.8132006090. The cubic root of 30313979 is about 311.8034971012.

The spelling of 30313979 in words is "thirty million, three hundred thirteen thousand, nine hundred seventy-nine".