220930312 has 16 divisors (see below), whose sum is σ = 416727360. Its totient is φ = 109803024.

The previous prime is 220930301. The next prime is 220930319. The reversal of 220930312 is 213039022.

It is not an unprimeable number, because it can be changed into a prime (220930319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81348 + ... + 84019.

It is an arithmetic number, because the mean of its divisors is an integer number (26045460).

Almost surely, 2^220930312 is an apocalyptic number.

It is an amenable number.

220930312 is a deficient number, since it is larger than the sum of its proper divisors (195797048).

220930312 is a wasteful number, since it uses less digits than its factorization.

220930312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165540 (or 165536 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 220930312 is about 14863.7247014334. The cubic root of 220930312 is about 604.5308039435.

Adding to 220930312 its reverse (213039022), we get a palindrome (433969334).

The spelling of 220930312 in words is "two hundred twenty million, nine hundred thirty thousand, three hundred twelve".