30643313 has 2 divisors, whose sum is σ = 30643314. Its totient is φ = 30643312.

The previous prime is 30643309. The next prime is 30643369. The reversal of 30643313 is 31334603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24433249 + 6210064 = 4943^2 + 2492^2 .

It is a cyclic number.

It is not a de Polignac number, because 30643313 - 2² = 30643309 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30643303) 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, 15321656 + 15321657.

It is an arithmetic number, because the mean of its divisors is an integer number (15321657).

Almost surely, 2^30643313 is an apocalyptic number.

It is an amenable number.

30643313 is a deficient number, since it is larger than the sum of its proper divisors (1).

30643313 is an equidigital number, since it uses as much as digits as its factorization.

30643313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 23.

The square root of 30643313 is about 5535.6402520395. The cubic root of 30643313 is about 312.9285869735.

Adding to 30643313 its reverse (31334603), we get a palindrome (61977916).

The spelling of 30643313 in words is "thirty million, six hundred forty-three thousand, three hundred thirteen".