30445223 has 2 divisors, whose sum is σ = 30445224. Its totient is φ = 30445222.

The previous prime is 30445211. The next prime is 30445229. The reversal of 30445223 is 32254403.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30445223 - 2⁶ = 30445159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30445229) 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, 15222611 + 15222612.

It is an arithmetic number, because the mean of its divisors is an integer number (15222612).

Almost surely, 2^30445223 is an apocalyptic number.

30445223 is a deficient number, since it is larger than the sum of its proper divisors (1).

30445223 is an equidigital number, since it uses as much as digits as its factorization.

30445223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 30445223 is about 5517.7190033564. The cubic root of 30445223 is about 312.2528323977.

Adding to 30445223 its reverse (32254403), we get a palindrome (62699626).

The spelling of 30445223 in words is "thirty million, four hundred forty-five thousand, two hundred twenty-three".