30353221 has 2 divisors, whose sum is σ = 30353222. Its totient is φ = 30353220.

The previous prime is 30353207. The next prime is 30353287. The reversal of 30353221 is 12235303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28740321 + 1612900 = 5361^2 + 1270^2 .

It is a cyclic number.

It is not a de Polignac number, because 30353221 - 2¹¹ = 30351173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30353821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15176610 + 15176611.

It is an arithmetic number, because the mean of its divisors is an integer number (15176611).

Almost surely, 2^30353221 is an apocalyptic number.

It is an amenable number.

30353221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30353221 is an equidigital number, since it uses as much as digits as its factorization.

30353221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 30353221 is about 5509.3757359614. The cubic root of 30353221 is about 311.9379841950.

Adding to 30353221 its reverse (12235303), we get a palindrome (42588524).

The spelling of 30353221 in words is "thirty million, three hundred fifty-three thousand, two hundred twenty-one".