30523430 has 32 divisors (see below), whose sum is σ = 63063360. Its totient is φ = 10419840.

The previous prime is 30523429. The next prime is 30523433. The reversal of 30523430 is 3432503.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30523433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18020 + ... + 19640.

It is an arithmetic number, because the mean of its divisors is an integer number (1970730).

Almost surely, 2^30523430 is an apocalyptic number.

30523430 is an abundant number, since it is smaller than the sum of its proper divisors (32539930).

30523430 is a wasteful number, since it uses less digits than its factorization.

30523430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904.

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

The square root of 30523430 is about 5524.8013538950. The cubic root of 30523430 is about 312.5199731234.

Adding to 30523430 its reverse (3432503), we get a palindrome (33955933).

The spelling of 30523430 in words is "thirty million, five hundred twenty-three thousand, four hundred thirty".