30288961 has 2 divisors, whose sum is σ = 30288962. Its totient is φ = 30288960.

The previous prime is 30288959. The next prime is 30288989. The reversal of 30288961 is 16988203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20647936 + 9641025 = 4544^2 + 3105^2 .

It is a cyclic number.

It is not a de Polignac number, because 30288961 - 2¹ = 30288959 is a prime.

Together with 30288959, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 30288961.

It is not a weakly prime, because it can be changed into another prime (30288931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15144480 + 15144481.

It is an arithmetic number, because the mean of its divisors is an integer number (15144481).

Almost surely, 2^30288961 is an apocalyptic number.

It is an amenable number.

30288961 is a deficient number, since it is larger than the sum of its proper divisors (1).

30288961 is an equidigital number, since it uses as much as digits as its factorization.

30288961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 30288961 is about 5503.5407693593. The cubic root of 30288961 is about 311.7176967862.

The spelling of 30288961 in words is "thirty million, two hundred eighty-eight thousand, nine hundred sixty-one".