30313219 has 2 divisors, whose sum is σ = 30313220. Its totient is φ = 30313218.

The previous prime is 30313201. The next prime is 30313229. The reversal of 30313219 is 91231303.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30313219 - 2⁵ = 30313187 is a prime.

It is a super-4 number, since 4×30313219⁴ (a number of 31 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 30313219.

It is not a weakly prime, because it can be changed into another prime (30313229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15156609 + 15156610.

It is an arithmetic number, because the mean of its divisors is an integer number (15156610).

Almost surely, 2^30313219 is an apocalyptic number.

30313219 is a deficient number, since it is larger than the sum of its proper divisors (1).

30313219 is an equidigital number, since it uses as much as digits as its factorization.

30313219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 30313219 is about 5505.7441822155. The cubic root of 30313219 is about 311.8008913437.

The spelling of 30313219 in words is "thirty million, three hundred thirteen thousand, two hundred nineteen".