30423563 has 2 divisors, whose sum is σ = 30423564. Its totient is φ = 30423562.

The previous prime is 30423539. The next prime is 30423619. The reversal of 30423563 is 36532403.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30423563 - 2⁶ = 30423499 is a prime.

It is a super-2 number, since 2×30423563² = 1851186371229938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30426563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15211781 + 15211782.

It is an arithmetic number, because the mean of its divisors is an integer number (15211782).

Almost surely, 2^30423563 is an apocalyptic number.

30423563 is a deficient number, since it is larger than the sum of its proper divisors (1).

30423563 is an equidigital number, since it uses as much as digits as its factorization.

30423563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 30423563 is about 5515.7558865490. The cubic root of 30423563 is about 312.1787649389.

Adding to 30423563 its reverse (36532403), we get a palindrome (66955966).

The spelling of 30423563 in words is "thirty million, four hundred twenty-three thousand, five hundred sixty-three".