30918241 has 2 divisors, whose sum is σ = 30918242. Its totient is φ = 30918240.

The previous prime is 30918229. The next prime is 30918287. The reversal of 30918241 is 14281903.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26419600 + 4498641 = 5140^2 + 2121^2 .

It is a cyclic number.

It is not a de Polignac number, because 30918241 - 2⁷ = 30918113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30918341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15459120 + 15459121.

It is an arithmetic number, because the mean of its divisors is an integer number (15459121).

Almost surely, 2^30918241 is an apocalyptic number.

It is an amenable number.

30918241 is a deficient number, since it is larger than the sum of its proper divisors (1).

30918241 is an equidigital number, since it uses as much as digits as its factorization.

30918241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 30918241 is about 5560.4173404521. The cubic root of 30918241 is about 313.8616542023.

The spelling of 30918241 in words is "thirty million, nine hundred eighteen thousand, two hundred forty-one".