30651241 has 2 divisors, whose sum is σ = 30651242. Its totient is φ = 30651240.

The previous prime is 30651239. The next prime is 30651251. The reversal of 30651241 is 14215603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19395216 + 11256025 = 4404^2 + 3355^2 .

It is an emirp because it is prime and its reverse (14215603) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30651241 - 2¹ = 30651239 is a prime.

Together with 30651239, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (30651251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15325620 + 15325621.

It is an arithmetic number, because the mean of its divisors is an integer number (15325621).

Almost surely, 2^30651241 is an apocalyptic number.

It is an amenable number.

30651241 is a deficient number, since it is larger than the sum of its proper divisors (1).

30651241 is an equidigital number, since it uses as much as digits as its factorization.

30651241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 30651241 is about 5536.3562927254. The cubic root of 30651241 is about 312.9555714787.

Adding to 30651241 its reverse (14215603), we get a palindrome (44866844).

The spelling of 30651241 in words is "thirty million, six hundred fifty-one thousand, two hundred forty-one".