30031232 has 96 divisors (see below), whose sum is σ = 75426960. Its totient is φ = 11658240.

The previous prime is 30031223. The next prime is 30031237. The reversal of 30031232 is 23213003.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031237) 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 in 11 ways as a sum of consecutive naturals, for example, 108278 + ... + 108554.

Almost surely, 2^30031232 is an apocalyptic number.

30031232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30031232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37713480).

30031232 is an abundant number, since it is smaller than the sum of its proper divisors (45395728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30031232 is a wasteful number, since it uses less digits than its factorization.

30031232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 30031232 is about 5480.0759118830. The cubic root of 30031232 is about 310.8310410713.

Adding to 30031232 its reverse (23213003), we get a palindrome (53244235).

The spelling of 30031232 in words is "thirty million, thirty-one thousand, two hundred thirty-two".