220031224 has 16 divisors (see below), whose sum is σ = 471495600. Its totient is φ = 94299072.

The previous prime is 220031219. The next prime is 220031233. The reversal of 220031224 is 422130022.

It is a junction number, because it is equal to n+sod(n) for n = 220031198 and 220031207.

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, 1964509 + ... + 1964620.

It is an arithmetic number, because the mean of its divisors is an integer number (29468475).

Almost surely, 2^220031224 is an apocalyptic number.

It is an amenable number.

220031224 is an abundant number, since it is smaller than the sum of its proper divisors (251464376).

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

220031224 is a wasteful number, since it uses less digits than its factorization.

220031224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3929142 (or 3929138 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 220031224 is about 14833.4494976725. The cubic root of 220031224 is about 603.7096319315.

Adding to 220031224 its reverse (422130022), we get a palindrome (642161246).

The spelling of 220031224 in words is "two hundred twenty million, thirty-one thousand, two hundred twenty-four".