30073961 has 2 divisors, whose sum is σ = 30073962. Its totient is φ = 30073960.

The previous prime is 30073919. The next prime is 30073963. The reversal of 30073961 is 16937003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28302400 + 1771561 = 5320^2 + 1331^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30073961 is a prime.

Together with 30073963, 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 (30073963) 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, 15036980 + 15036981.

It is an arithmetic number, because the mean of its divisors is an integer number (15036981).

Almost surely, 2^30073961 is an apocalyptic number.

It is an amenable number.

30073961 is a deficient number, since it is larger than the sum of its proper divisors (1).

30073961 is an equidigital number, since it uses as much as digits as its factorization.

30073961 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 29.

The square root of 30073961 is about 5483.9731035081. The cubic root of 30073961 is about 310.9783899543.

The spelling of 30073961 in words is "thirty million, seventy-three thousand, nine hundred sixty-one".