30321232 has 40 divisors (see below), whose sum is σ = 60264000. Its totient is φ = 14775552.

The previous prime is 30321229. The next prime is 30321233. The reversal of 30321232 is 23212303.

It is a Harshad number since it is a multiple of its sum of digits (16).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30321233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152269 + ... + 152467.

It is an arithmetic number, because the mean of its divisors is an integer number (1506600).

Almost surely, 2^30321232 is an apocalyptic number.

It is an amenable number.

30321232 is a deficient number, since it is larger than the sum of its proper divisors (29942768).

30321232 is a wasteful number, since it uses less digits than its factorization.

30321232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 30321232 is about 5506.4718286758. The cubic root of 30321232 is about 311.8283627517.

Adding to 30321232 its reverse (23212303), we get a palindrome (53533535).

The spelling of 30321232 in words is "thirty million, three hundred twenty-one thousand, two hundred thirty-two".