222831320 has 16 divisors (see below), whose sum is σ = 501370560. Its totient is φ = 89132512.

The previous prime is 222831313. The next prime is 222831391. The reversal of 222831320 is 23138222.

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, 2785352 + ... + 2785431.

It is an arithmetic number, because the mean of its divisors is an integer number (31335660).

Almost surely, 2^222831320 is an apocalyptic number.

222831320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222831320 is an abundant number, since it is smaller than the sum of its proper divisors (278539240).

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

222831320 is a wasteful number, since it uses less digits than its factorization.

222831320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5570794 (or 5570790 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 222831320 is about 14927.5356305051. The cubic root of 222831320 is about 606.2597614895.

Adding to 222831320 its reverse (23138222), we get a palindrome (245969542).

The spelling of 222831320 in words is "two hundred twenty-two million, eight hundred thirty-one thousand, three hundred twenty".