30523412 has 12 divisors (see below), whose sum is σ = 53945556. Its totient is φ = 15110400.

The previous prime is 30523403. The next prime is 30523429. The reversal of 30523412 is 21432503.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29116816 + 1406596 = 5396^2 + 1186^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37373 + ... + 38180.

It is an arithmetic number, because the mean of its divisors is an integer number (4495463).

Almost surely, 2^30523412 is an apocalyptic number.

It is an amenable number.

30523412 is a deficient number, since it is larger than the sum of its proper divisors (23422144).

30523412 is a wasteful number, since it uses less digits than its factorization.

30523412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75658 (or 75656 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30523412 is about 5524.7997248769. The cubic root of 30523412 is about 312.5199116913.

Adding to 30523412 its reverse (21432503), we get a palindrome (51955915).

Subtracting from 30523412 its reverse (21432503), we obtain a palindrome (9090909).

The spelling of 30523412 in words is "thirty million, five hundred twenty-three thousand, four hundred twelve".