30523223 has 2 divisors, whose sum is σ = 30523224. Its totient is φ = 30523222.

The previous prime is 30523219. The next prime is 30523247. The reversal of 30523223 is 32232503.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30523223 - 2² = 30523219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30523195 and 30523204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30523723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15261611 + 15261612.

It is an arithmetic number, because the mean of its divisors is an integer number (15261612).

Almost surely, 2^30523223 is an apocalyptic number.

30523223 is a deficient number, since it is larger than the sum of its proper divisors (1).

30523223 is an equidigital number, since it uses as much as digits as its factorization.

30523223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 30523223 is about 5524.7826201580. The cubic root of 30523223 is about 312.5192666521.

Adding to 30523223 its reverse (32232503), we get a palindrome (62755726).

The spelling of 30523223 in words is "thirty million, five hundred twenty-three thousand, two hundred twenty-three".