220312238 has 8 divisors (see below), whose sum is σ = 331785720. Its totient is φ = 109717000.

The previous prime is 220312237. The next prime is 220312241. The reversal of 220312238 is 832213022.

220312238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220312237) 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, 218933 + ... + 219936.

It is an arithmetic number, because the mean of its divisors is an integer number (41473215).

Almost surely, 2^220312238 is an apocalyptic number.

220312238 is a deficient number, since it is larger than the sum of its proper divisors (111473482).

220312238 is a wasteful number, since it uses less digits than its factorization.

220312238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439122.

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

The square root of 220312238 is about 14842.9187830426. The cubic root of 220312238 is about 603.9665328737.

It can be divided in two parts, 2203 and 12238, that added together give a palindrome (14441).

The spelling of 220312238 in words is "two hundred twenty million, three hundred twelve thousand, two hundred thirty-eight".