31104224 has 24 divisors (see below), whose sum is σ = 62542368. Its totient is φ = 15220480.

The previous prime is 31104223. The next prime is 31104259. The reversal of 31104224 is 42240113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31104223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8837 + ... + 11844.

It is an arithmetic number, because the mean of its divisors is an integer number (2605932).

Almost surely, 2^31104224 is an apocalyptic number.

It is an amenable number.

31104224 is an abundant number, since it is smaller than the sum of its proper divisors (31438144).

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

31104224 is a wasteful number, since it uses less digits than its factorization.

31104224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20738 (or 20730 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 31104224 is about 5577.1161006384. The cubic root of 31104224 is about 314.4897222493.

Adding to 31104224 its reverse (42240113), we get a palindrome (73344337).

The spelling of 31104224 in words is "thirty-one million, one hundred four thousand, two hundred twenty-four".