30131224 has 16 divisors (see below), whose sum is σ = 56997720. Its totient is φ = 14931840.

The previous prime is 30131201. The next prime is 30131243. The reversal of 30131224 is 42213103.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30131198 and 30131207.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15762 + ... + 17569.

Almost surely, 2^30131224 is an apocalyptic number.

It is an amenable number.

30131224 is a deficient number, since it is larger than the sum of its proper divisors (26866496).

30131224 is a wasteful number, since it uses less digits than its factorization.

30131224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33450 (or 33446 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 30131224 is about 5489.1915616054. The cubic root of 30131224 is about 311.1756399407.

Adding to 30131224 its reverse (42213103), we get a palindrome (72344327).

The spelling of 30131224 in words is "thirty million, one hundred thirty-one thousand, two hundred twenty-four".